Velocity changes from v to 2v change in kinetic energy kinetic energy
Utj , 4 Years ago
Grade 11
Mechanics> Velocity changes from v to 2v change in k...
2 Answers
Aditya Gupta
Last Activity: 4 Years ago
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 :))
Vikas TU
Last Activity: 4 Years ago
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!
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