The kinetic energy of an object of mass m, moving with a velocity of 5 m/s is 25 J. What will be its kinetic energy when its speed is doubled? it is given here doubled not tripled.
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Answers
Answered by
17
Given:
We know that:
If velocity is doubled, the new kinetic energy will be:
Alternative Method:
We know that:
Therefore, if velocity is doubled, Kinetic Energy becomes 4 times.
- Kinetic energy of the body is 100J.
Potential Energy: It is the energy possessed by a body at rest due to its position size or shape.
Kinetic Energy: It is the energy possessed by a body due to its state of motion.
anindyaadhikari13:
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Answered by
23
We know that
K.E = Kinetic energy attain by object
m = Mass of the object
v = Velocity of the object
Given parameters:
- K.E. of the object = 25 J
- Velocity of the object ( v) = 5 m/s
50 = 25 × m
m = 2 kg
⠀
1st case:
⠀
When velocity is doubled, then
v = 10 m/s
m = 2 kg
K.E = 10²
K.E = 100 J
⠀
2nd case:
⠀
When velocity is increased three times, then
v = 15 m/s
m = 2 kg
K.E = 225 J
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