Question

A ball of mass 100 g moving with a speed of 72km per hour is hit by a bat that changes its speed to 144 km per hour. Find the change in the kinetic energy of the ball

Answer 1

Answer:

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Explanation:

Given,

m = 100g = 0.1 kg

u = 72 km/hr => 20 m/s

v = 144 m/s => 40 m/s                                          

ΔK.E =  [ ΔK.E - change in kinetic energy ]

ΔK.E =

ΔK.E =

ΔK.E = 60 J

Brainliest please