The ball that correctly relates the kinetic energy of a ball is; Ball C
The kinetic energy of an object is the energy generated by an object in motion ( i.e. object whose speed is greater than zero )
and the formula for Kinetic energy = 1/2 mv^2 .
Ball B :
mass = 4kg , speed = 8 m/s . kinetic energy = 130 J
K.E = 1/2 ( 4 * 8^2 )
= 128 J ( 130 J ≠ 128 J ) ( does not correctly relate the kinetic energy
Ball C :
mass = 5 kg, speed = 8 m/s , kinetic energy = 160 J
K.E = [tex]1/2*[/tex] [tex]( 5 * 8^2 )[/tex]
= 160 J ( 160 J = 160 J ) ( correctly relates the kinetic energy )
Hence we can conclude that The ball that correctly relates the kinetic energy of a ball is; Ball C.
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