A rocket whose initial mass is  12,500 kg is in deep space and consumes fuel at a rate of  62.5 kg /s .  The speed of the exhaust gases relative to the rocket engine is  2,500 m/s.  What is the thrust of the engines in units of kilo-Newtons (kN)?

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Q: Set 1..

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”