A force of 1 N accelerates a mass of 1 kg at the rate of 1 m/s2. The acceleration of a mass of 2 kg acted upon by a net force of 2 N is
A) twice as much.
B) the same.
C) half as much.
D) none of these.

Question

Quizplus · Accepted Answer

The acceleration a mass experiences due to a force is given by Newton's second law, $F = ma$, where $F$ is the force, $m$ is the mass, and $a$ is the acceleration. For a 2 kg mass acted upon by a 2 N force, the acceleration is $a = F/m = 2N/2kg = 1 m/s^2$, which is the same as the acceleration of a 1 kg mass acted upon by a 1 N force.

A Force of 1 N Accelerates a Mass of 1