Distance, velocity and time

Question 1

State the relationship between average speed, distance moved and time.

Answer 1

speed = distance/time

Question 2

What is a light gate?

Answer 2

It measures how long a light beam is broken for

e.g. a 10cm card which takes 0.1s to pass –> speed = 10cm/0.1s = 100cm/s

Question 3

State the relationship between acceleration, velocity and time.

Answer 3

acceleration = change in velocity/time

Question 4

On a velocity-time graph, how would you know when the object is travelling at a constant speed?

Answer 4

When the line of the graph is straight and horizontal.

Question 5

On a velocity-time graph, what are the rise, run and gradient of the graph equivalent to?

Answer 5

Rise = velocity
Run = time
Gradient = acceleration

(gradient = rise/run = velocity/time = acceleration)

Question 6

On a velocity-time graph, what does the area underneath the graph represent?

Answer 6

The distance

Question 7

How fast does an object travel if, on a distance-time graph, it’s speed is represented as a straight and horizontal line?

Answer 7

It would be stationary.