Answer :
Explanation:
From crook energy theorem
Work done = change in KE
[tex]\\\begin{aligned}&=\frac{1}{2} m u^{2}-\frac{1}{2} m v_{i}^{2} \\&=\frac{1}{2} m\left(v_{f}^{2}-v_{i}^{2}\right) \\&=0.5 \times 15.5\left(1105-7.5^{2}\right) \\w &=[589 \mathrm{J}]\end{aligned}$[/tex]