(a)[2]
Calculate the acceleration of the vehicle when time = 30 s.
(b)[3]
Without any further calculation, state how the acceleration at time = 100 s compares with the acceleration at time = 10 s. Suggest, in terms of force, why this change has occurred.
(c)[3]
Determine the distance travelled by the vehicle from time = 120 s to time = 160 s.