Question

L

Answer 1

Directed toward the center of the curve, so D.

Answer 2

yes, D

Answer 3

D
Because whenever net force=0, then acceleration=0 ie rate of change of VELOCITY (not speed) = 0

therefore, velocity is constant

In this question, the velocity is definitely not constant, since the car is travelling in a circle, hence it's changing its direction at every moment.

So, net force is NOT zero.

Since it's travelling in a circular path, and the rate of change of velocity always points towards the center of rotation, so force is directed towards the centre of the curve.