Question

A boy on a bicycle drags a wagon full of newspapers at 0.80 m/s for 30 min using force of 40 N. how much work he ha the boy done

Answer 1

Explanation:

Work is force × displacement

Now we know that velocity is in m/s and displacement is in metre and time in second

So m/s×s = m

So displacement (s) is 0.8×30

So s = 24m

W = Fs= 24×40 = 960J