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When speed is doubled, KE becomes 4 times. Why? |
| Answer» EXPLANATION:KE = 1/2 (mv²)If we take Speed to be v seconds, when it is DOUBLED it will be 2vSubstituting 2V in the formulaKE = 1/2 [m(2v)²] = 1/2 (4mv²) = 2mv²As you can CLEARLY see 2mv² = 1/2mv² ₓ 4Hence, when speed is doubled, KE becomes 4 times.Hope it HELPS!!! :) | |