Question

If Kinetic Energy of a man of mass 40kg while running is 500J,then his velocity is _______

Answer 1

Answer:

5 ms^-1

Explanation:

The formula for kinetic energy is

= 1/2×m×v^2

As kinetic energy is given,

= 500= 1/2×40×v^2

= 500= 20×v^2

= 500/20= v^2

= 25= v^2

v= 5ms^-1

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