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forgot some details to the question but that's ok because i have a general one: a puck is hit with an initial velocity of 5 m/s and comes to a stop some time later. the question is find the friction coefficient of the ice and puck.
anyways, when making a forces diagram, i know the friction points back but does anything point forward? is there a force pushing it (after its been hit) and if so, how do you find it?
what i did to solve it was say the net force equals Fpuck - Ffriction = ma
they gave the mass and i solved for acceleration using regular kinematics but i had to assume Fpuck was 0. is that true? the answer came out correct but i don't know why the Fpuck=0.
anyways, when making a forces diagram, i know the friction points back but does anything point forward? is there a force pushing it (after its been hit) and if so, how do you find it?
what i did to solve it was say the net force equals Fpuck - Ffriction = ma
they gave the mass and i solved for acceleration using regular kinematics but i had to assume Fpuck was 0. is that true? the answer came out correct but i don't know why the Fpuck=0.