Chapter 8

NCERT
Class 9
Science
Solutions
4. A batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball slows a stop because:

Question:

A batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball slows a stop because:

(a) The batsman did not hit the ball hard enough.

(b) Velocity is proportional to the force exerted on the ball.

(c) This is a force on the ball opposing the motion.

(d) There is no unbalanced force on the ball, so the ball would want to come to rest.

Answer:

(c) There is a force on the ball opposing the motion.

Explanation of unbalanced force

The unbalanced force can be understood by the following experiment.

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