Answer :
The roller coaster needs to be stopped with a force of 9000 N.
What is force and example?
The term force refers to the tendency of a body to modify or change its state as a result of an outside factor. Additionally, a force applied to the body can cause it to change in size, shape, and direction. Like kicking a ball, opening and closing doors, or kneading dough, for instance.
The magnitude of acceleration of car a is = 10m/s²
The mass of each car is, m = 300kg
According to Newton's second law, force is calculated as the sum of an object's mass and acceleration. The force applied to each car is then,
F = ma
And the roller coaster is subject to the following force,
F' = 3F
F' = 3×300×10
F' = 9000N
Therefore, we can say that the roller coaster required 9000 N of force to stop.
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