Question

For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 63 N acts on a certain object, the acceleration of the object is 7 /ms2. If the acceleration of the object becomes 2nd /ms2, what is the force?

Answer 1

18 N

Explanation:

Let F denote the force, m denote the mass of the object and a denote the acceleration of the object.

`F=ma`

`m = (F_(1) )/(a_(1) )=(63)/(7) =9 kg`

`F_(2) =ma_(2)=9*2=18N`