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A constant power P is applied to a car starting from rest. If v is the velocity of the car at time t, then:A. `vprop t`B. `v prop (1)/(t)`C. `v prop sqrt(t)`D. `v prop (1)/sqrt(t)` |
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Answer» [3] Power, `P=mxxaxxv` `P=mxx(v^(2))/(t)` If p is constant, then for a given body `v^(2)propt` or `vprop sqrt(t)` |
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