Question

A ball of mass $150g$ starts moving with an acceleration of $20m/s^2$. When hit by a force, which acts on it for $0.1$ sec the impulsive force (in newton second) is

Answer 1

Answer: 0.3

Given mass of ball $=150g$ acceleration $=20m/s^2$.
To find Impulsive force $=?$
sol We know that
\begin{aligned}
\text { Force } &=\operatorname{mars} \times \text { acceluation } \\
F &=m a \\
F &=150 \times 10^{-3} \times 20 \\
F &=3 N
\end{aligned}


\begin{aligned}
\text { Impulse } &=\text { F. } 4 t \\
&=3 \times 0.1=0.3 N . S
\end{aligned}