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Calculating Average Force
We can calculate the average acceleration of the Curiosity rover during its landing on Mars using the initial velocity, vi , the final velocity, vf , and the time it took to stop:
a=vf−vit
According to Newton’s second law, the average force required to slow the Curiosity rover to a stop, F , is equal to the mass of the rover, m , multiplied by its average acceleration, a :
F=ma
Use these equations to calculate the average force required to stop the Curiosity rover if the initial velocity is 5,300 m/s, the final velocity is 0 m/s, the time required to stop is 7 minutes, and the mass of the rover is 533 kg. (Be sure to convert the time, 7 minutes, to seconds!)
Sagot :
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