Chapter 09 Ready-To-Go Teaching Module Post-Class: Linear Momentum and Collisions Predict/Calculate Problem 9.21 IPA 0.16-kg baseball moves toward home plate with a velocity (31 m/s). After striking the bat, the ball moves vertically upward with a velocity (29 m/s) Part A Find the direction of the impulse delivered to the ball by the bat. Assume that the ball and bat are in contact for 1.5 mus Express your answer using two significant figures VAE Submit Part B Request Answer 00 ? from the +-axs Find the magnitude of the impulse delivered to the ball by the bat. Assume that the ball and bat are in contact for 1.5 m Express your answer using two significant figures. Revin

Chapter 09 Ready-To-Go Teaching Module Post-Class: Linear Momentum and Collisions Predict/Calculate Problem 9.21 IPA 0.16-kg baseball moves toward home plate with a velocity (31 m/s). After striking the bat, the ball moves vertically upward with a velocity (29 m/s) Part A Find the direction of the impulse delivered to the ball by the bat. Assume that the ball and bat are in contact for 1.5 mus Express your answer using two significant figures VAE Submit Part B Request Answer 00 ? from the +-axs Find the magnitude of the impulse delivered to the ball by the bat. Assume that the ball and bat are in contact for 1.5 m Express your answer using two significant figures. Revin

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter8: Momentum And Collisions

Section: Chapter Questions

Problem 14P: In a slow-pitch softball game, a 0.200-kg softball crosses the plate at 15.0 m/s at an angle of 45.0...

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An estimated force-time curve for a baseball struck by a bat is shown in Figure P9.13. From this curve, determine (a) the magnitude of the impulse delivered to the ball and (b) the average force exerted on the ball. Figure P9.13
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A car crashes into a large tree that does not move. The car goes from 30 m/s to 0 in 1.3 m. (a) What impulse is applied to the driver by the seatbelt, assuming he follows the same motion as the car? (b) What is the average force applied to the driver by the seatbelt?
A soccer player runs up behind a 0.450-kg soccer ball traveling at 3.20 m/s and kicks it in the same direction as it is moving, increasing its speed to 12.8 m/s. (a) What is the change in the magnitude of the balls momentum? (b) What magnitude impulse did the soccer player deliver to the ball? (c) What magnitude impulse would be required to kick the ball in the opposite direction at 12.8 m/s, instead? (See Section 6.1.)
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(a) Does the center of mass of a rocket in free space accelerate? Explain. (b) Can the speed of a rocket exceed the exhaust speed of the fuel? Explain.
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In research in cardiology and exercise physiology, it is often important to know the mass of blood pumped by a persons heart in one stroke. This information can be obtained by means of a ballistocardiograph. The instrument works as follows. The subject lies on a horizontal pallet floating on a film of air. Friction on the pallet is negligible. Initially, the momentum of the system is zero. When the heart beats, it expels a mass m of blood into the aorta with speed , and the body and platform move in the opposite direction with speed V The blood velocity can be determined independently (e.g., by observing the Doppler shift of ultrasound). Assume that it is 50.0 cm/s in one typical trial. The mass of the subject plus the pallet is 54.0 kg. The pallet moves 6.00 10-5 m in 0.160 s after one heartbeat. Calculate the mass of blood that leaves the heart. Assume that the mass of blood is negligible compared with the total mass of the person. (This simplified example illustrates the principle of ballistocardiography, but in practice a more sophisticated model of heart function is used.)