Osterberg(Physics.I. Name. . Exam.Review(Day.1. Date. ..Hour. . Day$1$Exam$Review ... · 2020-01-23 · Exam Review Day 4 – Circular Motion and Gravitation 1. For the following

Osterberg(Physics.I. . . . . Name.________________________________.Exam.Review(Day.1. . . . . Date._____________________..Hour._____.

Day$1$Exam$Review.Kinematics$.1...Explain.the.difference.between.vector.and.scalar.quantities...Which.of.the.following.quantities.are.vector.quantities:.distance,.displacement,.speed,.velocity,.acceleration?.

.

.

.

.2...What.is.the.definition.of.velocity?.Unit?..What.equation.is.used.to.calculate.velocity?..What.does.a.positive.velocity.indicate?..What.does.a.negative.velocity.indicate?.

.

.

.

.

.3....The.slope.of.a.position.vs..time.graph.indicates.the.object’s.______________________..

The.slope.of.velocity.vs..time.graph.indicates.the.object’s.____________________..The.area.underneath.the.curve.of.a.velocity.vs..time.graph.indicates.the.object’s._________________..

.4...Define.acceleration...Unit?..What.is.the.acceleration.due.to.Earth’s.gravity?..What.is.the.equation.for.acceleration?.

.

.5...a).In.which.situations.would.acceleration.have.a.positive.direction?...b)..In.which.situations.would.acceleration.have.a.negative.value?.

.6...According.to.the.graph.below,.which.runner.is.faster?..Which.direction.are.they.heading.(toward.or.

away)?..Which.runner.is.ahead?....................

A.

B.

Osterberg(Physics.I. . . . . Name.________________________________.Exam.Review(Day.1. . . . . Date._____________________..Hour._____.7...The.space.shuttle.was.launched.on.October.29,.1998.with.John.Glenn.aboard...After.a.short.time.the.

broadcast.showed.that.the.shuttle.was.traveling.at.1300.m/s...70..s.later.it.was.traveling.at.1720.m/s..a.. Make.a.motion.diagram.for.the.70..s.of.speeding.up...Label.all.known.values.with.appropriate.

units.and.place.a.question.mark.for.the.unknown.values...Be.sure.to.include.the.direction.of.the.acceleration..

.

.

.

.

.b.. Make.a.distance.verses.time;.velocity.verses.time;.and.acceleration.verses.time.graph.and.label.

all.known.values...Use.the.velocity.graph.to.calculate.the.acceleration.of.the.shuttle.and.the.distance.it.went.up..Use.the.slope.of.the.graphs.and.the.area.under.the.velocity.vs..time.graph.to.calculate.the.acceleration.of.the.shuttle.and.the.distance.it.went.up..Be.sure.to.show.all.work.and.write.the.answer(s).with.correct.significant.figures.and.units..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.c.. Use.the.kinematics.equations.to.calculate.the.acceleration.of.the.shuttle.and.the.distance.it.

traveled.up..Be.sure.to.show.all.work.and.write.the.answer(s).with.correct.significant.figures.and.units..(Note:.This.a.way.to.check.the.answers.you.get.in.part.b.).

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Osterberg(Physics.I. . . . . Name.________________________________.Exam.Review(Day.1. . . . . Date._____________________..Hour._____.8.. A.hockey.player.is.skating.along.at.15.m/s...He.skids.and.coming.to.a.full.stop.3.75.m.later..

a.. Make$a$motion$diagram...Label.all.known.values.with.appropriate.units.and.place.a.question.mark.for.the.unknown.values...Be.sure.to.include.the.direction.of.the.acceleration..

.

.

.

.b.. Make$graphs...Make.a.distance.verses.time;.velocity.verses.time;.and.acceleration.verses.time.

graph...On.your.graphs.label.all.known.values...........c.. Use$the$kinematics$equations$to.calculate.the.unknown.values..Be.sure.to.show.all.work.and.

write.the.answer(s).with.correct.significant.figures.and.units............d.. Check.your.calculations.by.going.back.to.the.velocity.graph.and.calculate.the.slope.and.area.

from.the.velocity.vs..time.graph.in.order.to.check.your.work.in.part.c...Be.sure.to.show.all.work.and.write.the.answer(s).with.correct.significant.figures.and.units..

..........OPTIONAL:.For.problems.9(11,.on.additional.paper,.use.the.same.format.as.problem.8.to.find.and.check.all.unknown.kinematic.values..9.. An.astronaut.drops.a.feather.1.0.m.above.the.surface.of.the.moon...The.feather.lands.1.2.s.later..10.. You.drop.a.penny.from.the.Mackinaw.Bridge...You.see.that.it.lands.in.the.water.7.0.s.later..11.....An.airplane.must.gain.a.ground.speed.of.60..m/s.in.order.to.take.off...The.plane.is.designed.to.

accelerate.at.1.5.m/s2..


Exam Review Day 2 - Projectile Motion Show all work on another sheet of paper. 1. A cannonball is fired at 50. m/s from a horizontally aimed cannon set at the top of a cliff. It

takes 3.0 s for the cannonball to land. a. Draw the motion diagrams for the x and y motion and label all known values, then put a

question mark by unknown values. Then, use the projectile motion equations for the following. Write all answers with correct significant figures and units. b. How far did the cannonball drop? c. How far did it travel horizontally? d. Just before landing, how fast was it moving down? e. Just before landing, how fast was it moving horizontally?

2. A cannonball is fired from a 35 m tall cliff with a velocity of 50. m/s at a 36.9° angle above the

horizontal (40. m/s horizontally, 30. m/s up). On route to the ground, the cannonball goes through three interesting points listed below. For each of the points listed below, draw the motion diagrams for the x and y motion and label all known values, then put a question mark by unknown values. Then use the projectile motion equations to calculate the height above the ground, horizontal distance from the cannon, time of flight, horizontal velocity, and vertical velocity. Write all answers with correct significant figures and units. Show all work. a. Highest point. b. Same elevation from which fired. c. Ground level.

3. A cannonball is fired from a 35 m tall cliff with a velocity of 50. m/s at a 36.9° angle below the horizontal (40. m/s horizontally, 30. m/s down). a. Draw the motion diagrams for the x and y motion and label all known values, then put a

question mark by unknown values. Then use the projectile motion equations to calculate the following. Write all answers with correct significant figures and units. Show all work.

b. How far did it travel horizontally? c. Just before landing, how fast was it moving down? d. Just before landing, how fast was it moving horizontally? e. How much time did it take to land?.


Exam Review Day 3 - Dynamics 1. What is a force? What is the unit for force? List the five different types of forces and the symbols

for them. 2. What.is.Newton’s.first,.second,.and.third.laws.of.motion?......3. A 100. N force pulls at an angle of 36.9° on a 24 kg block. The coefficient of friction between the

block and the ground is 0.25 and the force pulled on the block for 6.0 s. a. Make a force diagram. Label all forces with values. Then, make a motion diagram. Label all

known values and put a question mark by unknown values.

b. Use Newton’s 2nd Law to find the acceleration. Show your work and write the answer with

correct significant figures and units.

c. Use the kinematics equations to find the distance and velocity after the 6.0 s pull. Show your

work and write the answer with correct significant figures and units.

each square = 20 N

Tension = 100. N

@ 36.9°


4. A 24 kg block is already moving at 6.0 m/s when it gets to a ramp which is on a 30.° angle. The coefficient of friction is 0.25. The block slides up the ramp slowing to a stop. a. Make a force diagram. Label all forces with values. Then, make a motion diagram. Label

all known values and put a question mark by unknown values.

b. Use Newton’s 2nd Law to find the acceleration. Show your work and write the answer

with correct significant figures and units.

c. Use the kinematics equations to find the distance and time. Show your work and write the

answer with correct significant figures and units.

5. A 200. N force is applied at a 36.9° angle from the vertical to a 24 kg block pressing it against a

wall 2.0 m above the floor. The block speeds up as it slides to the floor in 3.0 s. Calculate the coefficient of friction. a. Make a force diagram. Label all forces with values. Then, make a motion diagram. Label

all known values and put a question mark by unknown values. Finally, use the motion diagram to calculate acceleration. Show your work and write the answer with correct significant figures and units.

b. Use Newton’s 2nd Law to find the net force. Show your work and write the answer with

correct significant figures and units.

c. Calculate the coefficient of friction. Show your work and write the answer with correct

significant figures and units.

each square = 60 N

Weight = 240 N

Push = 200 N @

36.9° from wall

scale: 1 square = 40 N


.

Exam Review Day 4 – Circular Motion and Gravitation

1. For the following identify the forces, label the direction of the net force and write an equation for the net force.

..

person on amusement park swing

person on The Rotor

person at top of a Ferris Wheel

person at bottom of a Ferris Wheel

car at top of hill car inverted at top of loop on roller coaster

ball on string, at top of swing

ball on string, at bottom of swing

moon orbiting Earth

satellite orbiting planet

car on a banked curve, no friction

car on a curve


.

2. What does Newton’s Universal law of Gravitation state about mass and distance? 3. The coefficient of friction between a cars tires and the road is 0.80. A 1500 kg car travels around a 120 m

radius curve. a. Draw a front view of the car as it is rounding the curve and identify all forces acting on it. b. Make a force diagram for the car label all values. Be sure to calculate the net force and label it next

to the diagram. Show all work and write all answers using correct significant figures and units. c. Use Newton’s 2nd Law to calculate the acceleration of the car. Show all work and write all answers

using correct significant figures and units. d. Calculate the maximum speed of the car. Show all work and write all answers using correct

significant figures and units. 4. A 230 kg roller coaster car goes around a vertical loop with a 15 m radius. When it is upside down at the

top of the loop the car is traveling at 25 m/s. a. Calculate the acceleration of the car. Show all work and write all answers using correct significant

figures and units. b. Using Newton’s 2nd Law to calculate the net force on the car. Show all work and write all answers

using correct significant figures and units. c. Make a force diagram for the car while it is at the top of the loop. Calculate the size of all forces and

indicate the net force off to the side of the diagram. Show all work and write all answers using correct significant figures and units.

d. What is the force of the track down on the roller coaster car when it is at the top of the loop? 5. A 65 kg box is “floating” in the space shuttle as the shuttle orbits the Earth from a height of 400,000. m

above the surface of the Earth. The radius of the Earth is 6,370,000 m. (We cannot use 9.8 for g.) a. The mass of the Earth is 5.97x1024 kg. Calculate the force of gravity on the box. Show all work and

write all answers using correct significant figures and units. b. Make a force diagram for the box. Be sure to indicate the size and direction of the net force next to

the diagram. c. Using Newton’s 2nd Law calculate the acceleration of the box. Show all work and write all answers

using correct significant figures and units. d. Calculate how much time it will take the box to orbit the Earth. Show all work and write all answers

using correct significant figures and units. e. Calculate how fast the box is moving. Show all work and write all answers using correct significant

figures and units.

.


Exam Review Day 5 – Work and Energy For each of the problems, fill in the work-energy bar chart. Then, write the work-energy equation. Finally, show all work and write answers with correct significant figure and units. 1. (Runaway Truck Ramp) The 25,000 kg truck is moving at 40. m/s, when it goes into the gravel

bed. While stopping, the gravel produces a friction force of 250,000 N. Determine the distance it takes to stop the truck.

2. (Coaster Stopper Thriller Case Study) A 500. kg cart, including passenger, coasts down a

frictionless incline that is 50. m long and 30 m high. The cart is stopped by compressing a spring at the end of the incline. The spring constant is 6000. N/m. Calculate the amount the spring is compressed to stop the car.

y

Mass of Earth0 m

No Friction

30. m

0

KEo + Ugo + Uso + W =

0

KE + Ug + Us + Heatfy

Mass of Earth0 m

Friction is present

0


0

KE + Ug + Us + Heatf

Osterberg(Physics.I. . . . . Name.________________________________.Exam.Review(Day.5. . . . . Date._____________________..Hour._____.3. (Velcro-Skier Joy Ride Case Study) You are to design a “Velcro-Skier Joy Ride” that has the

following characteristics. A 100. kg skier wearing a Velcro vest coasts down a 100. m long slope that is 60. m high and has a coefficient of friction between it and the skis of 0.20, making the force of friction 160 N. At the bottom, the skier enters a level, frictionless surface on which a spring is located. The end of the spring has rollers and a Velcro cushion. The skier should compress the spring 3.0 m before stopping. In building the device, you are to determine the force constant of the spring needed for the device.

4. (Coal Cart Motor Case Study) The rope attached to the motor pulls a 2,000. kg cart up an incline so

that the cart’s speed increases from 0.0 m/s to 12.0 m/s in a distance of 40. m and 24 m high. The coefficient of friction between the cart and the incline is 0.50, which provides a force of friction of 8000. N. You are to buy a motor to perform this task. Determine the force that the motor must be able to exert.

5. List the types of energy and their symbols. 6. Explain the differences between work and energy and give the units and symbols for each. 7. You are pushing against a wall all hour. You are tired out. According to physics, why did you

not do any work onto the wall?

y

Mass of Earth0 m

Friction is present

60. m

y

Mass of Earth0 m

Friction is present

24 m

0


0


0


0



.

Exam Review Day 6 – Momentum Show all work. Write answers with correct significant figures and units. 1. A 20,000. kg truck traveling at 25 m/s has a head on inelastic collision with a 1500 kg car traveling at -30.

m/s. a. Calculate the initial momentum of the truck. b. Calculate the initial momentum of the car. c. Calculate the total momentum. d. Using the conservation of momentum equation, calculate the velocity of the truck and the car after

they collide and stick together. f. Calculate the change in velocity of the truck and its driver. Note: the change in velocity is equal to

the final velocity minus the initial velocity. g. Calculate the change in velocity of the car and its driver. h. The collision takes 0.030 s and the truck driver has a mass of 80. kg, use impulse to calculate the net

force on the truck and the net force on the truck driver during the collision. Then, use Newton’s 2nd Law to calculate the acceleration of the truck driver.

i. The collision takes 0.030 s and the car driver has a mass of 80. kg, use impulse to calculate the net

force on the car and the net force on the car driver during the collision. Now use Newton’s 2nd Law to calculate the acceleration of the car driver.


.

2. A 0.60 kg basketball bounces straight up from the floor with an initial speed of 4.0 m/s. Just after leaving the floor a 0.20 kg softball comes from above and hits the basketball with a speed of -4.0 m/s. a. Calculate the initial momentum of the basketball. b. Calculate the initial momentum of the softball. c. Calculate the total momentum. d. Write an equation that relates the total momentum to the final masses and velocities of the

basketball and the softball. Use vb for the velocity of the basketball and vs for the velocity of the softball.

e. Calculate the initial kinetic energy of the basketball. f. Calculate the initial kinetic energy of the softball. g. Calculate the total kinetic energy of the basketball and the softball. h. Write an equation that relates the total kinetic energy to the final masses and velocities of the

basketball and the softball. Use vb for the velocity of the basketball and vs for the velocity of the softball.

i. Using algebra you can use your answers to parts d and h to calculate the speeds of the balls after the

collision. However, since this is a very time consuming calculation, I will tell you that the final velocity of the basketball is zero and you can use either the equation from part d or from part h to solve for the speed of the softball.

.

Osterberg(Physics.I. Name. . Exam.Review(Day.1. Date. ..Hour. . Day$1$Exam$Review ... · 2020-01-23 · Exam Review Day 4 – Circular Motion and Gravitation 1. For the following

Documents