Question

How long will it take a - 1.26 * 10 ^ 4 force to stop a 2.30 * 10 ^ 3 truck moving at a speed of 22.2 m/s?

Answer 1

4.1s

Step-by-step explanation:

Given parameters:

Force applied = 1.26 x 10⁴ N

Mass of the truck = 2.3 x 10³kg

Speed of the truck = 22.2m/s

Unknown:

The time it will take to stop the truck = ?

Solution:

To solve this problem, we must understand that the momentum must be conserved.

So;

Momentum of the truck = Impulse applied on it

mass x velocity = Force x time taken

So;

Time taken =
`(nass x velocity )/(force )` =
`(2300 x 22.2 )/(12600)` = 4.1s