50 kg bicyclist on a 10 kg bicycle speeds up from 5m/s to 10m/s . what was total kinetic energy before accelerating? what was total kinectic energy after accelerating?how much work was done to increase kinetic energy of the bicyclist?
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31
Answer:
450 J , 3000 J , 2550 J
Explanation:
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Answer:
1.The total kinetic energy before accelerating = 1/2[Mu²]
The total kinetic energy before accelerating = 0.5[(60)(5)²]
The total kinetic energy before accelerating = 750 J
2. The total kinetic energy after accelerating = 1/2[Mv²]
The total kinetic energy after accelerating = 0.5[(60)(10)²]
The total kinetic energy after accelerating = 3,000 J
3. Total work done = Δ K.E
Total work done = 3,000 J - 750 J
Total work done = 2,250 J
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