In the given situation a block, of mass 10 kg is on the ground and given initial velocity 50 m/s. Observer-1 is at rest, observer-2 is moving with velocity 5 m/s, observer-3 moving with velocity 10 m/s and observer -4 moving with velocity 15 m/s in the direction as shown in the figure. 10 kg μ = 0.1 0 m/s (1) 50 m/s 5 m/s (2) A 10 m/s 15 m/s (3) A work done on block due to friction and work done on ground due to friction as observed by 1...???
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