An obfect-moves with velocity 10m/sec and changes its
velocity by 20 ms. The mass of object is 50kg Calculate
the workdone by the object
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Answer:
Total work done = change in kinetic energy
∴ W = 1/2×m×(v final)² - 1/2×m×(v initial)²
= 1/2 × 50× (20² - 10²)
= 25 × 300
= 7500J
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