Question

Please tell the answer of question 4 d

Answer 1

Depending on the angle of a hill, You wouldnt want your vehicle to run off it because the slope is too high and also, You wouldnt want your vehicle going backwards either.

Answer 2

The real issue here is power. Most vehicles don't have the ability to exert enough force fast enough to climb up a steep slope like that. ... The idea is that it's easier to exert less power over a longer period of time. Also, going down those steep slopes may cause more accidents than the winding mountain road.