Questions
If momentum of a certain body is increased by 50%then increase in the K.E. of the body will be
a
25%
b
50%
c
100%
d
125%
detailed solution
Correct option is D
p=(2mE) or E∝p2 ∴ E2E1=p22p12 or E2E1−1=p22p12−1 or E2−E1E1×100=p22−p12p12×100 % increase =(150)2−(100)2(100)2×100 =(150+100)(150−100)100=125%Talk to our academic expert!
Similar Questions
Water falls from a height of 60 m at the rate of 15 kg/s to operate a turbine. It losses 10% of energy due to frictional forces . How much power is generated by the turbine?
(g = 10 )
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