7. 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?

The average net force exerted is 36000 N.

Explanation:

According to Newton's 2nd law of motion,

The net force acting upon the object is the product of mass and acceleration of an object.

Force = ma

where m represents the mass,

a represents the acceleration.

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

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 = 36000 Newtons.