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A block of mass 2.50 kg is pushed 2.20 m along a frictionless horizontal table by a constant 20.0 N force directed 25.0° below the horizontal.
(a) Determine the work done by the applied force.
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(b) Determine the work done by the normal force exerted by the table.
(c) Determine the work done by the force of gravity.
(d) Determine the work done by the net force on the block.
A 4.4kg ball with a velocity of 5.0m/s in the+x-direction collides head-on elastically with a stationary 2.5kg ball. What is the speed of the second ball after the collision
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Starting from rest, you move with a constant acceleration of 2.1 m/s2 for 13.0 s and then move with an acceleration of -2.1 m/s2 for another 13.0 s. How far do you go during the whole trip
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