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  • A batsman hits back a ball of mass straight in the direction

A batsman hits back a ball of mass \mathrm{0.4 \mathrm{~kg}} straight in the direction of the bowler without changing its initial speed of \mathrm{15 \mathrm{~ms}^{-1}}. The impulse imparted to the ball is _________Ns.

Option: 1

12


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

Let the ball is initially & along the \mathrm{+x}-axis




\mathrm{\bar{u}= 15\left ( \hat{i} \right )}
\mathrm{\bar{v}= 15\left ( \hat{-i} \right )}
\mathrm{Impulse= \Delta \bar{p}= m\left ( \bar{v} -\bar{u}\right )}
                   \mathrm{= 0.4\left ( 15\left ( -\hat{i} \right )-15\hat{i} \right )}

\mathrm{\text{Magnitude of Impulse}= \left | \Delta \bar{p} \right |= \left | -12\hat{i} \right |= 12\, Ns} 

Posted by

shivangi.shekhar

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