Question

. Alfonso pushes a box on a well waxed (frictionless) floor to the right with a 20 N force causing it to accelerate at 1.5 m/s2 . What is the mass of the box?

Answer 1

Newtown's 2nd law:

F = m*a
F: force, m: mass, a: acceleration

Solve for m.

Answer 2

The answer is m = 13.33Kg

Step by Step Explanation:

1- Taking into account Newton's second law (also known as the fundamental law of dynamics) we know that force is directly proportional to the mass and acceleration of a body.

2- This law is represented by the formula f = m.a where (f) represents force, (m) mass and (a) acceleration.

3- Having this formula, we can clear the mass (m) and replace the data given in the problem.

f = m.a

`m = (f)/(a) \\m = (20N)/(1.5m/s^(2) ) \\m = 13.33 kg`