A car of mass starts from rest and attains a speed of in on a straight road
PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A car of mass 800kg starts from rest and attains a speed of 20ms−1 in 5s on a straight road.
(a) Calculate the momentum of the car:
(i) at the start,
(ii) at the end of the 5s interval.
(b) Determine the magnitude of the net force that must have acted on the car during this time.
(c) Find the acceleration produced in the car.