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| 1. |
a body of mass 10 kg starting from rest ,accelerates uniformly to a speed of 30m/s in 10 s. Brakes are applied on the body stops in next 5 sec. calculate the accelerating force and the stopping force |
| Answer» GIVEN, m=10kgu=30m/sv=0m/st=5secAs we KNOW Force=mass×acceleration& SECONDLY acceleration=v-u/t. So, F=10kg×0-30/5F=10×6Then,F=60N | |