A) 950 J
B) 900 J
C) 875 J
D) 850 J
Correct Answer: B
Solution :
\[x=3{{t}^{2}}+5\] \[V=\frac{dx}{dt}=6t\] at \[t=0,\,\,u=0\] at \[t=5,\,\,v=30m/s\] \[W=\Delta \,K=\frac{1}{2}\,\,\times \,\,2{{\left( 30 \right)}^{2}}=900\text{ }J\]
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