hey. may I know the answers of the following questions please..
How does the kinetic energy of a body change when:
a) Mass of the body is doubled
b) velocity of the body is halved
c) velocity of the body increases by three times!
Answers
Answered by
5
C) is the answer according to me
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Hope it helps you
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Hope it helps you
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Answered by
1
HERE IS YOUR ANSWER
kinetic energy = 1/2mv^2
a) mass = 2m
kinetic energy = 1/2 × 2 m × v^2
= mv^2
so the kinetic energy increased by 2 times
b) velocity = 1/2 v
kinetic energy = 1/2 × m × v^2 /4
= mv^2/8
so the kinetic energy is decreased by 4 times
c) velocity = 3v
kinetic energy = 1/2× m × 9 v^2
= 9mv^2/2
so the kinetic energy is increased by 9 times
HOPE MY ANSWER IS CORRECT
kinetic energy = 1/2mv^2
a) mass = 2m
kinetic energy = 1/2 × 2 m × v^2
= mv^2
so the kinetic energy increased by 2 times
b) velocity = 1/2 v
kinetic energy = 1/2 × m × v^2 /4
= mv^2/8
so the kinetic energy is decreased by 4 times
c) velocity = 3v
kinetic energy = 1/2× m × 9 v^2
= 9mv^2/2
so the kinetic energy is increased by 9 times
HOPE MY ANSWER IS CORRECT
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you're welcome and thanks for the help!! :-)
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