genier113 genier113

06-01-2016
Physics

Answered

A sprinter has a mass of 80kg and a kinetic energy of 4000 j. What is the sprinter's speed

Verified Answer :

pingwin09 pingwin09

06-01-2016

The formula of the kinetic energy is KE = 0.5mv^2.
Given m = 80 kg and KE = 4000 J,
4000 = 0.580v^2
v^2 = 100
v = 10 m/s

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