Question

A driver speeds up his car when he moves up a hill . Give reasons

Answer 1

When we go go up a hill,we will be going against the gravitational force.
So we experience a gravitational pull towards the ground.
So it is necessary to speed up the car while moving up hill.

Answer 2

Answer:

When the driver moves uphill, he speeds up the vehicle because the vehicle moves against the gravitational force which acts in the downwards direction. In order to overcome that force, the driver speeds up his vehicle by increasing its acceleration.