A 4 kg model rocket is launched expelling 40.00 g of burned, Ask an Expert

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Q. A 4 kg model rocket is launched, expelling 40.00 g of burned fuel from its exhaust at a speed of 550m/s. What is the velocity of the rocket after fuel has burned? Hint: Ignore the external forces of gravity and air resistance.

Q. A 230 air-track glider is attached to a spring. The glider is pushed in 8.20 and released. A student with a stopwatch finds that 10 oscillations take 12.

What is the spring constant?

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Category:- Physics
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