Gravity Answers

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firstsecond✔ third

In a crash test, a 2,500 kg car hits a concrete barrier at 1.3 m/s2. If the car strikes the barrier with a force of 3,250 N, how much resistance force does the barrier provide? N This pair of forces is an example of Newton’s law of motion.

✔ Newton’s first lawNewton’s second lawNewton’s third law

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A 2.9 kg model rocket accelerates at 15.3 m/s2 with a force of 44 N. Before launch, the model rocket was not moving. After the solid rocket engine ignited, hot gases were pushed out from the rocket engine nozzle and propelled the rocket toward the sky.Which of Newton’s laws apply in this example? Select three options.the first lawthe second lawthe third lawthe fourth lawthe fifth law