Recent content by lanky011

A sled slides along a horizontal surface on which the coefficient of kinetic friction is 0.40. Its velocity at point A is 7.4 m/s and at point B is 3.0 m/s. Use the impulse-momentum theorem to find how long the sled takes to travel from A to B. (7.4)(.4)=2.96 (3)(.4)=1.2...

(a)Use the impulse-momentum theorem to find how long a falling object takes to increase its speed from 4.5 m/s to 14.5 m/s (b) J=mΔv (c) I have 2 unknowns...J and m so how am I suppose to solve this?