Science
posted by George on .
What is the momentum of a 50 kg carton that slides at 2 m/s across an icy surface?
The sliding carton skids onto a rough surface and stops in 3 s. Calculate the force of friction it encounters.

Momentum = m*V = 50 * 2 = 100.
a = (VVo)/t = (02)/3 = 0.667 m/s^2.
Fk = m*a = 50 * (0.667) = 33.3 N.