Physical Science Review leah is awesome and so is tamara fav students ever and brendan too.

Physical Science Reviewleah is awesome and so is tamara fav

students ever and brendan too

100

1. Speed with direction is called ________.

Answer

1. Speed with direction is called ________.

Velocity

300

2. Lance Armstrong’s teammate, George Hincapie, averaged a speed of 33.6 km/hr in the 15th stage of the Tour de France, which took 4.00 hours. How far (in kilometers) did he travel?

Answer

2. Lance Armstrong’s teammate, George Hincapie, averaged a speed of 33.6 km/hr in the 15th stage of the Tour de France, which took 4.00 hours. How far (in kilometers) did he travel?

134 km

300

How are the variables speed and velocity different?

Answer

How are the variables speed and velocity different?

Velocity can be negative, it is speed with direction.

200

Write a + or - next to the directions which are positive and negative respectively.

a. up

b. left

c. east

Answer

Write a + or - next to the directions which are positive and negative respectively.

a. up

b. left

c. east

+-+

100

This is the rate at which velocity changes

Answer

This is the rate at which velocity changes

acceleration

300

This is the value of the acceleration due to gravity

Answer

This is the value of the acceleration due to gravity

9.8 m/s2

300

Why is the position vs time graph for an object in freefall a curve?

Answer

Why is the position vs time graph for an object in freefall a curve?

gravity is acting on the object causing it to accelerate, and objects which are accelerating show up as a curve on a position vs time graph.

200

If you walk 8 blocks north from your house and then 3 blocks south how far did you walk? What is your position relative to your house?

Answer

If you walk 8 blocks north from your house and then 3 blocks south how far did you walk? What is your position relative to your house?

you walked 11 blocks, you are 5 blocks north of your house.

200

You know time and speed. What is the equation for finding distance?

Answer

You know time and speed. What is the equation for finding distance?

d = t * vOther ways to write this equation:t = d/vv = d/tYou need to know how to use all 3 for the test.

100

What is the equation for finding acceleration?

Answer

What is the equation for finding acceleration?

acceleration = (vfinal - vinitial)/time

Also know how to find slope of a line.

slope = (Y2 - Y1)/(X2 - X1)

300

A high-speed train travels at 300 km/h. How long (in hours) would it take the train to travel 1,500 km at that speed?

Answer

A high-speed train travels at 300 km/h. How long (in hours) would it take the train to travel 1,500 km at that speed?

5 hours

300

It takes a garbage truck 10 seconds to go from 0 to 25 m/s. What is its acceleration?

Answer

It takes a garbage truck 10 seconds to go from 0 to 25 m/s. What is its acceleration?

2.5 m/s2

300

During what time is the object moving at a constant speed?

Answer

During what time is the object moving at a constant speed?

10-15 seconds

300

What is the object’s acceleration from 15 to 40 seconds?

Answer

What is the object’s acceleration from 15 to 40 seconds?

-4 m/min2

200

A variable that is described using both a number and a direction is called this.

Answer

A variable that is described using both a number and a direction is called this.

vector

200

If ramp A is steeper than ramp B what affect will it have on a car traveling down the ramp’s acceleration?

Answer

If ramp A is steeper than ramp B what affect will it have on a car traveling down the ramp’s acceleration?

the acceleration of the car on the steeper ramp will be greater.

200

A snail travels 200 cm in 1 hr calculate the snails speed in cm/hr.

Answer

A snail travels 200 cm in 1 hr calculate the snails speed in cm/hr.

200 cm/hr