A toy car with mass of m166 grams crashes into a spring, Ask an Expert

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Q. A toy car with mass of m=166 GRAMS crashes into a spring with constant k=45 N/m. If the car was going v=1.5 m/s, then how far will the spring compress?

Q. At one point in a skydive, a falling 66.00 kg skydiver is encountering air resistance of 452 N. How much does the skydiver weigh?

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