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Grade: 11
        
Velocity changes from v to 2v change in kinetic energy kinetic energy
7 months ago

Answers : (2)

Aditya Gupta
2042 Points
							
hello student, we know that KE= ½ mv^2
so, change in kinetic energy= final KE – initial KE
= ½ m*(2v)^2 – ½ m*(v)^2
= ½ m*(4v^2 – v^2)
3mv^2/2
kindly approve :))
7 months ago
Vikas TU
11768 Points
							
Dear student 
See know that kinetic energy KE=mv²/2
Now, if mass is m and v is doubled to 2v, from the equation, we get
KÉ=m(2v)²/2
=m4v²/2
Dividing this equation by the first one, we get
4. This implies that the ratio is 4:1. Hence, the kinetic energy has been increased by 4 times its original value.
Cheers!
7 months ago
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