physics-HELP

Suppose that you let the masses m1 and m2 slide (without adding the third mass).

a. what is the acceleration of the mass 25g? Hint: Identify the force that produces the motion and the one that opposes and write the equation for the net force.

b. what is the change of momentum of the 25g mass after 2 seconds of motion?

c. what distance would the mass fall?

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