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If v = (3i+4j+5k)ms^(-1) is the instan-t...

If v = `(3i+4j+5k)ms^(-1)` is the instan-taneous velocity of a body of mass 1.50 kg. calculate its kinetic energy.

Text Solution

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`V=(3i+4j+5k)ms^(-1)M=1.5 kg`
Kinetic energy K.E. `=(1)/(2)mv^(2)`
`=(1)/(2)1.5(3i+4j+5k).(3i+4j+5k,)`
= 37.5 joules.
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