When speed is doubled, KE becomes 4 times. Why?
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Answer:
Explanation:
KE = 1/2 (mv²)
If we take Speed to be v seconds, when it is doubled it will be 2v
Substituting 2v in the formula
KE = 1/2 [m(2v)²]
= 1/2 (4mv²) = 2mv²
As you can clearly see 2mv² = 1/2mv² ₓ 4
Hence, when speed is doubled, KE becomes 4 times.
Hope it helps!!! :)
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