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?

Question

Physics

Ruffe

26 June, 01:06

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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Brody Dean · 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