question_answer

A person of mass 60 kg finished the long jump at a distance of 9m Considering the person moves along the parabolic path and angle of jump to be\[\text{45}{}^\circ \], calculate the initial K.E.

Answer:

Mass, \[m=60\,\,kg;\,\,Dis\tan ce=range=9\,m;\] \[\theta =450;\,\,K.E=?\] We know that, \[K.E.={}^{1}/{}_{2}m{{v}^{2}}\]