1.7 determine acceleration from the gradient of a velocity-time graph

Using the equation we learnt before for acceleration:

change in velocity
    time taken

Simply take the final velocity and take the initial velocity away from it. Then put it over the time taken to perform the acceleration.

Examples:

1.

Calculate both the first acceleration (0-2 s) and the deceleration (10-12s)











2.

 Calculate both the first acceleration (3-5s) and the deceleration (8-10s).
















3. Calculate both accelerations (A&C)

Answers:

1. 4 m/s2 and -2 m/s2
2. 4 m/s2 and -4m/s2 
3. 2 m/s2 and 4 m/s2