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Q.

What will cause a greater change in the kinetic energy of a body?


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a

Changing its mass

b

Changing its velocity

c

Changing its height

d

None of the above 

answer is B.

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Detailed Solution

Change in velocity will cause a greater change in the kinetic energy of a body.
The energy from the movement of a body is called Kinetic energy.
K.E.=12mv2, where m is the mass of the body and v is the velocity of the body.
Kinetic energy is directly proportional to the mass's product and the velocity square. So, by changing the velocity, a greater change in the kinetic energy of a body is caused. Because of this, a change in velocity affects kinetic energy more than a change in body mass.
 
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