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Nitin Gupta Grade: 11

Momentum of a body is increased by 20%.Find % increase in Kinetic Energy 


7 years ago

Answers : (2)

Neel Pratik Bhatt
18 Points

Dear Nitin,

Momentum = mass * velocity = force * time 
Kinetic Energy = 1/2 * mass * velocity squared 

Since the mass of your object is not likely changing, it is the velocity which is changing. Therefore, your new velocity is 1.2 times your initial velocity. In the kinetic energy equation, velocity is squared. 1.2 squared = 1.44, and since nothing else is changing, your kinetic energy is now 1.44 times initial. This is an increase of 28.8%.Is The Answer Clear?


-Neel Bhatt

-Student(i Take askIITians Sessions) 

7 years ago
Nitin Gupta
16 Points

Sorry! Your answer is wrong.The correct answer is 44%

7 years ago
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