Question

An automobile vehicle has a mass of $1500$kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of $1.7{ms}^{-2}$?

Answer 1

Given : Retardation or negative acceleration $|a|=1.7$ $m{s}^{-2}$

Mass of the vehicle $m=1500kg$

Thus the force between the vehicle and the road $|f|=ma$

$|f|=1500\times 1.7=2550N$