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If a car moves with a speed of 50 km / h and thirty minutes later it has a speed of 30 km / h, it indicates that the car is slowing down. Explain why: (This is a physics question worth 30 points)
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If a car moves with a speed of 50 km / h and thirty minutes later it has a speed of 30 km / h, it indicates that the car is slowing down. Explain why:

(This is a physics question worth 30 points)

User Huayi Wei
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The car has slowed down because of the deceleration or decelerating force acting on it. The decelerating force acting on it is generated by the application of brakes or the frictional force acting in the opposite direction of car's motion.
User Zuleyka
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