What is the power output in watt of a 60 kg sprinter who accelerates from 0 to 10 m in 3 s?

# What is the power output in watt of a 60 kg

**prasanna**#2

Given, mass of the sprinter, m = 60 kg Initial velocity, u = 0 Final velocity, v = 10 m, time, t = 3 s

From the equation of motion, v = u +at

10 = 0 + a x 3

Acceleration = 10/3 m

s = ut + 1/2 ${{at}^{2}}$

s = 0 + 1/2 x 10/3 x 3 x 3 = 15 m

Work done = Force x Displacement

= 60 x 10/3 x 15 = 3000J

power = W/t

= 3000/3 = 1000W