3. The brakes exert a 640 N force on a car weighing 15,680 N and moving at 20 m/s. The car finally stops. What is the car's mass? (a) What is its initial momentum? (b) What is the change in the car's momentum? (c) How long does the braking force act on the car to bring it to a halt?

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3. The brakes exert a 640 N force on a car weighing 15,680 N and moving at 20 m/s. The car finally stops.
What is the car's mass?
(a) What is its initial momentum?
(b) What is the change in the car's momentum?
(c) How long does the braking force act on the car to bring it to a halt?
Transcribed Image Text:3. The brakes exert a 640 N force on a car weighing 15,680 N and moving at 20 m/s. The car finally stops. What is the car's mass? (a) What is its initial momentum? (b) What is the change in the car's momentum? (c) How long does the braking force act on the car to bring it to a halt?
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