the kinetic energy of an object of mass m moving with a velocity of 5 metre per second is 25 joule .what will be it's kinetic energy when it's velocity is doubled .what will be ito kinetice energy when it's velocity is increased three times?
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KE=1/2*m*v*v
Here, m=2KE/v*v
=2*25/(5*5)=2 kg
If velocity is doubled, kinetic energy
KE=1/2*2*10*10=100 joules
If mass is increased by 3 times and velocity is 5 m/s,
KE=1/2*6*5*5=75 joules
If m=6 and v=10
KE=1/2*6*10*10=300 joules. Hope this helps.
Here, m=2KE/v*v
=2*25/(5*5)=2 kg
If velocity is doubled, kinetic energy
KE=1/2*2*10*10=100 joules
If mass is increased by 3 times and velocity is 5 m/s,
KE=1/2*6*5*5=75 joules
If m=6 and v=10
KE=1/2*6*10*10=300 joules. Hope this helps.
Answered by
1
1/2*m*v*v
1/2*25*5*5
1/2*25*25
1/2*625
312.5
1/2*25*5*5
1/2*25*25
1/2*625
312.5
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