Question

A car starts from rest, picking up speed and then moving on a smooth straight
road and with uniform speed. When the car is stationary, then ….. X ….. force
is acting on it. During pick up, …..Y….. force act on it. When the car moving
with constant velocity there is …..Z….. force acting on it. Here, X, Y, Z refer to:
i. Zero, positive, zero ii. positive, zero, positive
iii. Zero, zero, positive iv. positive, positive, zero
please do explain properly.

Answer 1

Answer:

i

Explanation:

during rest, no force acting so x is 0

during picking up speed force acting so y positive

during constant velocity no force, so z is 0