Peter found an amazing fact in an amusement park when he tried to ride the Magic Mountain Superman. Powerful magnets accelerate a car and its riders from zero to 45 m/s in 7 seconds. Suppose the mass of the car and riders is 5,600 kg. What is the average net force exerted on the car and riders by the magnets?

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Physics

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8 October, 20:58

Peter found an amazing fact in an amusement park when he tried to ride the Magic Mountain Superman. Powerful magnets accelerate a car and its riders from zero to 45 m/s in 7 seconds. Suppose the mass of the car and riders is 5,600 kg. What is the average net force exerted on the car and riders by the magnets?

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Mohamed Wolf · Answer 1

Mingled in among all those words, this question is just another

application of Newton's 2nd law of motion.

Force = (mass) x (acceleration)

Acceleration = (change in speed) / (time for the change)

Acceleration = (45 m/s) / (7 sec) = (45/7) m/s²

Force = (5,600 kg) x (45/7 m/s²)

Force = (800 x 45) Newtons

Force = 36,000 Newtons