A car is moving with a uniform velocity 30 meter per second. It is stopped in 2 seconds by applying a force of 1500 newton. through its brakes. Calculate (a) the change in momentum of the car, (b) the retardation produced in car, (c) the mass of the car.
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30 metres per second/2 second=15 metres per square second (retardation produced) and F=ma so 1500=m×15 metres per square second then 100kg(mass of the car) and momentum=mass ×velocity then 100kg×30 metres per second=3000kg per metres per second.
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