question_answer

A vehicle is moving with a velocity of 80 kmph. Calculate its kinetic energy, if the mass of the vehicle is 1000 kg.

Answer:

Given, \[V=80\,\,kmph=80\times \frac{5}{18}\]                                 \[=22.22\,\,m/s\] \[m=1000\,\,kgK.E.=?\] We know, \[K.E.=\frac{1}{2}m{{V}^{2}}\] \[=K.E.=\frac{1}{2}\times 1000\times {{(22.22)}^{2}}\] \[=246864.2\,\,J\]