Question

A man of mass 50kg is standing on a 100kg plank kept on a frictionless horizontal floor. initially both are at rest. if the man starts walking on the plank with the speed 6m/s, towards the right relative to the plank, then amount of muscle energy spent by the man is?​

Answer 1

Because it has kinetic energy

Answer 2

Answer:

Explanation: K.E = 1/2 MV^2

K.E = 1/2 ×50×6^2

K.E = 900 KG.M^2/$^2