Questions
The KE of a body moving with a speed of 10 m/s is 30 J. If its speed becomes 30 m/s, its KE will be :
detailed solution
Correct option is D
KE∝v2 ⇒ KE'=KE·v'v2=30×30102=270 JTalk to our academic expert!
Similar Questions
A running man has half the kinetic energy than a boy of half his mass has. The man speeds up by I m/sec and then has the same kinetic energy as the boy. What were the original speeds of man and boy respectively?
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