What is the height an object of mass 8 kg is dropped from is it has a maximum velocity of 40m/s just before it hits the ground
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Explanation:
m = 8kg = 8000g
KE = 1/2mv²
= 1/2 × 8000 × 40 × 40
= 1600 × 4000
= 6400000
= 64 × 10^5
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