Speed Objectives 1.3 recall and use the relationship between average speed, distance moved and time: average speed = distance moved/time taken STARTER TASK 1.What is the formula for calculating speed? 2.What is meant by ‘Average Speed’? 3.A car travels 70km at an average speed of 35km/hr. How long was the journey? Give
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Speed Objectives 1.3 recall and use the relationship between average speed, distance moved and time: average speed = distance moved/time taken STARTER.
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Speed Objectives1.3 recall and use the relationship between average speed, distance moved andtime: average speed = distance moved/time taken
STARTER TASK1.What is the formula for calculating speed?2.What is meant by ‘Average Speed’?3.A car travels 70km at an average speed of 35km/hr. How long was the journey? Give units.
What are the units of speed when:
1.Distance is measured in metres and time in seconds
2.Distance is measured in miles and time in hours
3.Distance is measured in kilometres and time in hours
4.Distance is measured in metres and time in minutes
5.Distance is measured in millimetres and time in seconds
Speedspeed = distance
time
In physics speed is usually measured in:metres per second (m/s)
also:distance =
and:time =
speed time
distance
speed x time
distance speed
6 = 12 2
What else do you know?
2 = 12 6
12 = 6 x 2
2 = 10 5
What else do you know?
5 = 10 2
10 = 5 x 2
5 = 15 3
3 = 15 5
15 = 5 x 3
What else do you know?
Speed = Distance Time
What else can you tell me?
2 = 10 5
Based on the above equation, how do I work out distance?
Based on the above equation, how do I work out time?
Distance = Speed x Time
Time = Distance ÷ Speed
Usian Bolt ran 100m in 9.58 seconds, what was his average speed?
10.43 m/s
(23 mph)
Pairs of cameras spot your number plate, start a timer, and then spot your number plate again leaving a zone
800m
The speed cameras record that a car takes 350 seconds to move between them. Calculate the average speed of the car. Show your working. Give the unit.
Question 2
2.28 m/s
Charlie Adam takes a free kick, He is 26 metres away from the goal and it took 1.02 seconds before it crosses the goal line. How fast does the ball travel? 25.49 (metres / second) (x2.24 to get Miles an Hour) =