To find the average net force exerted on the car and riders by the magnets, we can use Newton's second law of motion:
Force = mass x acceleration
In this case, the mass of the car and riders is given as 5000 kg, and the acceleration can be calculated using the formula:
acceleration = (final velocity - initial velocity) / time
Given that the initial velocity (rest) is 0 m/s, the final velocity is 55 m/s, and the time taken is 6.1 s, we can substitute these values into the formula to find the acceleration.
acceleration = (55 m/s - 0 m/s) / 6.1 s
Simplifying, we get:
acceleration = 9.016 m/s^2
Now, we can substitute the mass and acceleration values into Newton's second law to find the net force:
Force = 5000 kg x 9.016 m/s^2
Calculating this, we find:
Force = 45,080 N
Therefore, the average net force exerted on the car and riders by the magnets is 45,080 Newtons.