A body moving with a velocity 5m/s having mass 4kg stopped by some force, what will be the final
Kinetic energy?
(a) 50J
(b) 0J
(c) 25J
(d) 125J
Answers
Answered by
1
Answer:
Answer is 0 J of the question
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Answered by
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Mass of the body = 4 kg
Final velocity = 0 m/s
We know,
KE = ½ mv^2
So, KE = ½ (4 kg)(0 m/s^2)
⇒ KE = 0 J (b)
∴ Option (b) is correct here.
More:
The law of conservation of energy states that the total energy of a system remains conserved.
That is, KE + PE = Constant.
And, KE = p^2/2m.
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