numericmomentum7-18

# numericmomentum7-18 - TYPICAL NUMERIC QUESTIONS FOR PHYSICS...

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TYPICAL NUMERIC QUESTIONS FOR PHYSICS I REGULAR QUESTIONS TAKEN FROM CUTNELL AND JOHNSON MOMENTUM CONTENT STANDARD IV D 1. Jennifer is walking at 1.63 m/s. If Jennifer weighs 583 N, what is the magnitude of her momentum? A) 97.0 kg • m/s D) 672 kg • m/s B) 137 kg • m/s E) 951 kg • m/s C) 68.6 kg • m/s 2. A 1.0-kg ball has a velocity of 12 m/s downward just before it strikes the ground and bounces up with a velocity of 12 m/s upward. What is the change in momentum of the ball? A) zero kg • m/s D) 24 kg • m/s, downward B) 12 kg • m/s, downward E) 24 kg • m/s, upward C) 12 kg • m/s, upward 3. A baseball of mass m is struck by a bat so that it acquires a speed v . If t represents the duration of the collision between the bat and the ball, which expression determines the magnitude of the average force exerted on the ball? A) (1/2) mv 2 B) mvt C) (1/2) mv 2 t D) mt 2 /(2v) E) mv / t 4. A bat strikes a 0.050-kg baseball so that its velocity changes by +30 m/s in 0.10 s. With what average force was the ball struck? A) +15 N B) 15 N C) +300 N D) 300 N E) +150 N 5. A 100-kg cannon at rest contains a 10-kg cannon ball. When fired, the cannon ball leaves the cannon with a speed of 90 m/s. What is the recoil speed of the cannon?

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numericmomentum7-18 - TYPICAL NUMERIC QUESTIONS FOR PHYSICS...

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