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PHYS 101, Chapter 6 Homework

A pitcher claims he can throw a 0.145-kg baseball with as much momentum as a 3.00-g bullet moving with a speed of 1.50x10 3 m/s. (a) What must the baseball's speed be if the pitcher's claim is valid? (b) Which has greater kinetic energy, the ball or the bullet? .

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PHYS 101, Chapter 6 Homework

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  1. A pitcher claims he can throw a 0.145-kg baseball with as much momentum as • a 3.00-g bullet moving with a speed of 1.50x103 m/s. (a) What must the baseball's • speed be if the pitcher's claim is valid? (b) Which has greater kinetic energy, the • ball or the bullet? PHYS 101, Chapter 6 Homework

  2. 2. A 0.500 kg football is thrown toward the east with a speed of 15.0 m/s. • A stationary receiver catches the ball and brings it to rest in 0.020 s. • What is the impulse delivered to the ball as it is caught? • (b) What is the average force exerted on the receiver? PHYS 101, Chapter 6 Homework

  3. 3. A 730-N man stands in the middle of a frozen pond of radius 5.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.2-kg physics textbook horizontally toward the north shore at a speed of 5.0 m/s. How long does it take him to reach the south shore? PHYS 101, Chapter 6 Homework

  4. 4. A rifle with a weight of 30 N fires a 5.0-g bullet with, speed of 300 m/s. • Find the recoil speed of the rifle (b) If a 700-N man holds the rifle firmly • against his shoulder, find the recoil speed of the man and rifle. PHYS 101, Chapter 6 Homework

  5. 5. A 10-kg bowling ball moving at 2.0 m/s hits a 1.0-kg bowling pin, which is initially at rest. The other pins are all gone already, and the collision is head-on, so that the motion is one-dimensional. The ball continues travelling at 0.5 m/s. Find the velocity of the pin immediately after the collision. PHYS 101, Chapter 6 Homework

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