Question

A ball of mass 150g moving with an acceleration$20m/s^{2}$ is hit by a force, which acts on it for 0.1 sec. The impulsive force is

• A. 0.5 N-s
• B. 0.1 N-s
• C. 0.3 N-s
• D. 1.2 N-s

Answer 1

Answer: (C)

0.3 N-s

Answer 2

Impulsive force $= \text{force } \times \text{ time}$ $= ma \times t$

$= 0.15 \times 20 \times 0.1$= 0.3 N-s