Question

A force of 450 N accelerates a box across a frictionless surface at a rate of 15 m/s2. Find the mass of the box?

A) 30 N

B) 30 kg

C) 6,750 N

D) 6,750 kg

Answer 1

It would be: m= F/a = 450 N / 15 m/s^2 = 30 Kg

Answer 2

Second Law of Newton: Net force equals mass times acceleration

F = m*a => m = F/a

m = 450N / 15 m/s^2 = 30 kg

Answer: option B) 30 kg