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    				| 1. | How much force will be needed to increase the velocity of a body of mass 1 kg from 15 ms–1 to60 ms–1 in 15 sec.?Pls answer only if you know fast  | 
| Answer» Final VELOCITY - Intial velocity DIVIDED by 2 Then (20-10)/2 = 5 Also,f = ma given mass = 1 kga = 5 m/s2 THEREFORE,F = ma = 1 X 5 = 5 N | |