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What is the work required to increase the speed of 0.4kg ball from 1m/s to 3m/s ? |
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Answer» Answer: 1.6 J Explanation: K.E = (1/2)mv^2 = 0.5(0.4) = 0.2 kgm^2/s^2 K.E ' = (1/2)mv^2 = 0.5(0.4)9 = 1.8 kgm^2/s^2 So the DIFFERENCE is the WORK = 1.6 J |
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