Question

An vehicle has a mass of 1500 kg. What must be the force between the vehicle and the road if the vehicle is to be stopped with a negative acceleration of 1.7 ms⁻²? ( Ans: 2550 N in a direction opposite to that of the vehicle)

Answer 1

Acceleration of the Vehicles = -1.7 m/s².

Mass of the Vehicles = 1500 kg.

Using the Newton's Second law of the Motion,

Force = mass × acceleration.

∴ Force = 1500 × -1.7

⇒ Force = -2550 N.

Negative sign shows that the Force is acting in Opposite Direction.

Hence the force of 2500 N is acting in opposite direction.

Hope it helps.

Answer 2

┏─━─━─━─━∞◆∞━─━─━─━─┓ ✭✮ӇЄƦЄ ƖƧ ƳƠƲƦ ƛƝƧƜЄƦ✮✭ ┗─━─━─━─━∞◆∞━─━─━─━─┛

➧ Mass 0f Vehicle ➾ 1500 N
➧ Acceleration ➾ -1.7 m/s²
➧ Force ➾ ? 

❱ F ➾ m × a

F ➾ 1500 Kg (-1.7 m/s²)
F ➾ -2500 Kg m/s²
F ➾ -2500 N ...✔

_________               Thanks...✊