Homework Help: Science

Posted by George on Tuesday, February 26, 2013 at 10:43am.

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.

Science - Henry, Thursday, February 28, 2013 at 4:00pm
Momentum = m*V = 50 * 2 = 100.

a = (V-Vo)/t = (0-2)/3 = -0.667 m/s^2.
Fk = m*a = 50 * (-0.667) = -33.3 N.

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