A) calculate the kinetic energy of a 6kg object moving at 3m/s for 5s
B) calculate the work required to slow object to 1m/s
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kinetic energy = 1/2mv2
=1/2×6×3×3
=1/2×6×9
=1/2×54
=27J
=1/2×6×3×3
=1/2×6×9
=1/2×54
=27J
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