Question

A car starting from rest speeds up at a rate of 3 m/s each second for 10 seconds.Which describes the motion of the car?A.constant speedB. constant velocityC.constant displacementD. constant acceleration

Answer 1

It is said that speeds up at a rate of 3 m/s each second for 10 seconds.

Acceleration is the change in velocity or speed per second. The change in velocity is the same for every second for the car, which is 3m/s. So, since the change in velocity per second is the same, the car is in constant acceleration. The answer is option D.