Abox accelerates at a rate of 2/m/s/s when it is pushed with 15 n of force

The frictional force acted on mass, m = 7.5 kg

Explanation:

Given data,

The acceleration of the box, a = 2 m/s²

The force acting on the box, F = 15 N

The mass of the box, m = ?

The force is defined as the product of mass and acceleration.

                                     F = m x a    newton

Therefore,

                                     m = F / a

                                         = 15 / 2

                                         = 7.5 kg

Hence, the frictional force acted on mass, m = 7.5 kg

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y