Find the kinetic energy possess by a body of mass 20 kg when it's velocity
changes from 5m/s to 2 m/s?
Answers
Answered by
2
Answer:
Explanation:
Certain force acting on 20 kg mass changes its velocity from 5 m/s to 2 m/s. Calculate the work done by the force. (KE)2 = (1 )/2 x 20 — (2)2 = 40 J.
Answered by
0
Answer:
The kinetic energy possessed by the body is 210J.
Explanation:
The kinetic energy possed by the body will be given as,
(1)
Where,
K=kinetic energy possed by the body
m=mass of the body
u=initial velocity of the body
v=final velocity of the body
From the question we have,
The mass of the body=20kg
Initial velocity of the body(u)=5m/s
Final velocity of the body(v)=2m/s
By substituting the value of m, v, and u in equation (1) we get;
Hence, the kinetic energy possessed by the body is 210J.
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