After 24s, a box pushed at 2N on a frictionless surface resulted in a change in velocity equal to 7m/s. If the box had an initial velocity of 2.6m/s, what is the mass of the box being pushed?

Answer 1

F = ma = m(v - v₀)/t; m = Ft/(v - v₀) = 2N·24s/(7m/s - 2.6m/s) = 10.91 kg