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A car is moving along a straight horizontal road at a speed of 20 meters per second.  The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop in 10 seconds.  The mass of the car is:

a) 1250 kilograms

b) 2500 kilograms

c) 5000 kilograms

d) 10,000 kilograms

Ans:

The mass of the car is 2500 kilograms.

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