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A softball of mass 0.220 kilogram that is moving with a speed of 4.0 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Afterward it is found that the incoming ball has bounced backward with a speed of 1.6 m/s.
(a) Find the velocity of the target ball after the collision.
m/s
(b) Evaluate the mass of the target ball.
kg
A 100-kg halfback running north with a speed of 12 m/s is tackled by a 110-kg opponent running south with a speed of 4.0 m/s. If collision is completely inelastic and head-on, compute the speed of the players just after the tackle.
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