Question

An object with a mass of 375g is moving with a constant velocity. It has a force of -20 N applied to it. Determine the acceleration of the object. What is happening to the object?

Answer 1

Answer:

The acceleration of object is - 0.53 $ms^{-2}$ and it is moving in opposite direction.

Explanation:

Given

mass of object, m = 375 kg

Force applied, F = -20 N = -20 Kg$ms^{-2}$

acceleration of object, a = ?

We know that F = ma, where f is force, m is mass and a is acceleration.

therefore, a = F/m

                    = -20 Kg$ms^{-2}$ / 375 Kg

                    = - 0.53 $ms^{-2}$

When acceleration is negative, it means either the value  is decreasing or the object is moving in opposite direction.

In given case force is negative and so the negative value of acceleration means the object is moving in opposite direction.