Question

Question #afcbc

Answer 1

Newton's 2nd law helps to understand this

Explanation:

The force required to stop a vehicle is given by Newton's second law:

`F=ma=m((v-u)/t)`

Where v= final velocity and u= initial velocity. Since our final velocity is nil we can simplify to

`F=-"mu"/t`

So the force required to bring an object to a halt in a given time increases as its mass and velocity increase.

Hence a heavy vehicle moving quickly will require a larger force to stop it in the same time compared to a slower, lighter vehicle.