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Answered

An object has a kinetic energy of 2500 J and and moving at 30 m/s, what is its mass?

Answer :

Answer: ~5.5 kg
1. 2500=0.5*m*30^2
2. 2500=0.5*m*900
3. 2500=450m
4.m=2500/450
M=5.5 approx

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