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March 25, 2017

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Use principles of force and kinematics to answer these:
a.
A 40 kg skater pushes on the 60 kg skater (initially at rest). As they collide, the 40 kg skater pushes on the 60 kg skater, applying a force 100 Newtons for 1.2 seconds. Find the velocity at which each of them ends up moving (they should be equal).
b.
A 60kg skater slides at 3.0 m/s toward a 40 kg skater (initially at rest). They collide and hold on, so both have the same final speed. find that speed. You don't need to know the Force and the time, it will work out.

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