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_____________ is a measure of how far something travels in a particular time. (acceleration, speed)
Speed
How do you calculate speed?
Speed = distance travelled / time taken
What is the unit used for speed in Physics?
Metres per second (m/s)
What is the speed of a runner who runs 100 meters in 20 seconds?
5 m/s
What is the cruising speed of an airplane in m/s?
255 m/s
What is the speed of sound in air in m.p.h.?
738 m.p.h
How do you calculate average speed?
Average speed = total distance / total time.
It describes  how fast one object is moving compared to another
Relative motion
It shows how far an object travels over time.
distance–time graph
The speed at any given moment in time.
instantaneous speed
What happens if a distance-time graph line is horizontal?
The object is stationary or at rest.
What happens if the line on a distance-time graph is curved?
accelerating
What is the average speed of a marathon runner who runs 42.2 km in 2.5 hours?
16.88 km/h
If a car is moving at 30 m.p.h. towards another car, what is their relative speed?
60 m.p.h
the rate at which an object's speed changes. (velocity, acceleration)
Acceleration
If you travel 100 meters in 50 seconds, what is your speed?
2 m/s
What is the speed of light in air in m/s?
300,000,000 m/s
If a graph shows a straight line moving upward, what does this indicate? (constant, changing speed)
constant
What speed can a sneeze reach in m.p.h.?
100 m.p.h
What is the speed of a car that travels 150 km in 3 hours?
50 km/h
If a train is moving at 60 m.p.h. and another train is moving at 60 m.p.h. in the opposite direction, what is their relative speed?
120 m.p.h
If the distance-time graph is steep, what does that tell you about speed? (fast, slow)
The object is moving fast.
What is the speed of light in air in m.p.h.?
670,000,000 m.p.h
If a runner runs 200 meters in 25 seconds, what is their speed?
8 m/s
the total distance divided by total time. (instantaneous, average)
Average speed
the speed at a specific moment. (average or instantaneous)
instantaneous speed
What is the speed of a car that travels 600 meters in 60 seconds?
10 m/s
The steeper the slope, the (faster, slower, stationary) the object is moving.
faster
What is the relative speed if two cars are moving at the same speed at the same direction?
zero
What is the speed of a car moving 100 kilometers in 2 hours?
50 km/h
If a cyclist travels 240 meters in 60 seconds, what is their speed?
4 m/s
What is the speed of a car if it travels 120 kilometers in 2 hours?
60 km/h
If a car’s speed is 80 km/h, how far will it travel in 3 hours?
240 km
How long does it take for a train to travel 300 kilometers at a speed of 75 km/h?
4 hours
If you walk at a speed of 5 km/h, how long will it take you to walk 15 kilometers?
3 hours
A plane travels at 500 km/h for 4 hours. How far does it travel?
2000 km
How would you describe the relative speed of two cars moving towards each other at 60 km/h?
120 km/h
A marathon runner runs at an average speed of 10 km/h for 4 hours. How far does the runner travel?
40 kilometers
If a sprinter runs 100 meters in 10 seconds, what is their speed?
10 m/s
If a train is traveling at 100 km/h, how long will it take to cover 400 kilometers?
4 hours
What is the speed of a car that travels 90 kilometers in 1.5 hours?
60 km/h
How long does it take for a cyclist to cover 20 kilometers  at a speed of 10 km/h?
2 hours
If a motorbike travels at 80 km/h for 2.5 hours, how far will it travel?
200 kilometers