Question

A ball of mass 0.5 kg slows down from a speed of 5 metre per second to 3 metre per second calculate the work done in slowing down of the ball​

Answer 1

Answer:

4kgm/ss

Explanation:

M=0.5kg v(initial)=5m/s V(final)=3m/s

change in K.E=1/2×M×V×V-1/2×M×v×v

=1/2×0.5×9-1/2×0.5×25

=2.25-6.25

=-4kgm/ss

Answer 2

Answer:

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