Question

The position-time graph for four objects A, B, C and D moving along a straight line are given in the Fig. A net force acts on:

Options

• Object A

• Object B

• Object C

• Object D

Answer 1

Object C

Explanation:

An item only experiences a net force when its velocity changes, such as when it accelerates. The position-time graphs for objects A and D show straight lines, indicating motion with a constant velocity (no net force). The position-time graph for object B shows a horizontal line, indicating that there is no net force acting on it. The position-time graph for object C is a curve, which shows that it is accelerating and changing its velocity. Thus, object C is subject to a net force.