Velocity-time graphs

Question 1

Calculating acceleration on a velocity-time graph

Answer 1

Change in velocity / Change in time
Calculating the gradient

Question 2

How to know what the lines represent on a velocity-time graph

Answer 2

It is the same principles of a distance-time graph but instead of speed, it is with acceleration.

Question 3

How to find the distance on a velocity-time graph?

Answer 3

It is the area under the curve. You can count the squares or split it into different shapes.