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A 4.0-kg particle is moving horizontally with a speed of 5.0 m/s when it strikes a...

A 4.0-kg particle is moving horizontally with a speed of 5.0 m/s when it strikes a vertical wall. The particle rebounds with a speed of 3.0 m/s. The collision occurs in 2 ms. (a) what is the magnitude of the impulse delivered to the particle? (b) What the average impulsive force acted to the particle? Answers: (a) 24 Ns and (b) 1.6 x 104 N.

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