If a force of 10 N is applied on a mass of 5 kg, what will be its acceleration in m/s^2

Explanation:

Second Newton's Law

The theory that explains the relationship between the forces applied to an object and its motion is the second Newton's law.

It states that the net force applied to an object of mass m is given by

Where a is the acceleration aquired by the object that will cause a change of its velocity.

In our problem, we must compute the acceleration

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.