a moving body of mass 20 kg has 40j of kinetic energy.calculate its speed.
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Kinetic energy of a body = (1/2)mv^2
where, m is mass of the body and v is it's velocity.
we have mass =20kg and
kinetic energy = 40J
substitute the values in (1/2)mv^2 = kinetic energy
and you'll get
(1/2) (20)(v^2) =40
v^2 = 80/20
v^2 =4
v= 2
Therefore, the speed(velocity) of the given body would be 2m/s.
where, m is mass of the body and v is it's velocity.
we have mass =20kg and
kinetic energy = 40J
substitute the values in (1/2)mv^2 = kinetic energy
and you'll get
(1/2) (20)(v^2) =40
v^2 = 80/20
v^2 =4
v= 2
Therefore, the speed(velocity) of the given body would be 2m/s.
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