Explain briefly why the work done by a fielder when he takes a catch in a cricket match is negative.

Explanation

Here, the fielder uses a force to oppose the motion of the ball.
Thus, `theta=180^(@)`
We know,
work done = force (F) `xx` displacement (d) `cos180^(@)`
= `-Fxxd" "(becausecos180^(@)=-1)`
Thus, work done is negative.