b) Derive expression for kinetic energy of an object.
Answers
Answered by
0
Answer:
Suppose a body of mass m is moving with velocity v. It is brought to rest by applying a retarding force F. Suppose it traverses a distance s before coming to rest. Kinetic energy of body, KE = Work done by retarding force to stop it.
Answered by
3
Explanation:
Take W = Fs
we know that F=ma ; v^2 = u^2+2as (u=0)
s = v^2/2a .
Substitute F and s
W= ma x v^2/2a.
W = mv^2/2 .
W= KE= 1/2 mv^2.
Hope this is helpful.
If liked mark me as brainliest.
Similar questions