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9FA particle of mass 0 2 kg is moving in one dimension undto the particle. If the initial speed (in ms) of the partidle is zero, the speed (in ms) after 5s isder a force that delivers a constant power 0.5 wJEE-2013:4/60 |
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Answer» P = 0.5 watt. in 5 sec., W= Pt ⇒0.5×5 work⇒2.5 joule W =ΔKE (work energy theorem) 2.5=1/2×0.2[v^2−0] v = 5 ms^−1 |
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