The velocity of a body of mass 1 kg is increased from 3 m s' to 6 m s' in sometime
interval. Calculate the gain in kinetic energy of the body in that time interval.
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Explanation:
mass of the body= 1 kg
u, velocity=3m/s
v, velocity= 6m/s
we know that the kinetic energy of body osgiven by. 1/2 mv²
now,
the gain in the kinetic energy will be given
as ,
(final)- (initial kinetic energy)
1/2 mv²- 1/2 mu²
now putting the respective values
we get
1/2 1. (6)²-1/2 1.(3)²
1/2. 36-1/2.9
18.-. 4.5
13.5
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