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9. A pitcher delivers a fast ball with a velocity of 43 m/s to the south. The batter hits the ball and gives it a velocity of 51 m/s to the north. What was the average acceleration of the ball during the 1.0 ms when it was in contact with the bat? (A) 4.3 10 m/s, south 10¹ m/s', north (B) 7.0 (C) 5.110 m/s, north (D) 94-10 m/s, north

9. A pitcher delivers a fast ball with a velocity of 43 m/s to the south. The batter hits the ball and gives it a velocity of 51 m/s to the north. What was the average acceleration of the ball during the 1.0 ms when it was in contact with the bat? (A) 4.3 10 m/s, south 10¹ m/s', north (B) 7.0 (C) 5.110 m/s, north (D) 94-10 m/s, north

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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9. A pitcher delivers a fast ball with a velocity of 43 m/s to the south. The batter hits the ball and gives it a velocity of 51 m/s to the north. What was the average acceleration of the ball during the 1.0 ms when it was in contact with the bat? (C) 5,110 m/s, nemh (D) 9.410 m/s, north 10. A ball is thrown vertically upward from the surface of the earth Consider the following quantities: (A) 4.3 × 10 m/s', south (B) 7.0 10¹ m/s', north the speed of the ball, the velocity of the ball, il ill the acceleration of the ball. Which of these is (are) zero when the ball has reached the maximum height? (A) 1 and ill only (C) and only (B) / only (0) / only 11. Thomas throws a tennis ball vertically upward. The ball returns to the point of release after 3.56. What is the speed of the ball as it is released? (A) 0 m/s (B) 14 m/s (C) 17 m/s (D) 21 m/s 12. A tennis ball is thrown from ground level with velocity directed 30° above the horizontal, if it takes the ball 106 to reach the top of its trajectory, what is the magnitude of the initial velocity? (A) 4.9 m/s (C) 11.3 m/s (B) 9.8 m/s (D) 19.6 m/s 13. A cannonball is fired with initial velocity of 10 m/s at an angle of 25" above the horizontal. What is the horizontal distance covered by the cannonball landed on the same level? (C) 4.3 m (D) 7.8 m (A) 0.43 m (B) 0.78 m Item 14-15: A shell is fired with a horizontal velocity in the positive x-direction from the top of an 80-m high cliff. The shell strikes the ground 1330 m from the base of the cliff (Drawing is not to scale), 80 m 1330 m 14. What is the magnitude of the acceleration of the shell just before it strikes the ground? (A) 4.9 m/s (C) 330 m/s (B) 9.8 m/s (D) 170 m/s 15. Determine the initial speed of the shell. (A) 330 m/s (B) 4.0 m/s (A) (B) 2r (C) 170 m/s (D) 9.8 m/s Item 16-19: A racecar, traveling at constant speed, makes one lop around a circular track of radius r in a time t 16. What is the displacement of the racecar at the end of one lap? PHY (A) zero (C) (0) (D) 17. When the car has traveled halfway around the track, what is the magnitude of its displacement from the starting point? (C) RE (D) 2nr
Transcribed Image Text:9. A pitcher delivers a fast ball with a velocity of 43 m/s to the south. The batter hits the ball and gives it a velocity of 51 m/s to the north. What was the average acceleration of the ball during the 1.0 ms when it was in contact with the bat? (C) 5,110 m/s, nemh (D) 9.410 m/s, north 10. A ball is thrown vertically upward from the surface of the earth Consider the following quantities: (A) 4.3 × 10 m/s', south (B) 7.0 10¹ m/s', north the speed of the ball, the velocity of the ball, il ill the acceleration of the ball. Which of these is (are) zero when the ball has reached the maximum height? (A) 1 and ill only (C) and only (B) / only (0) / only 11. Thomas throws a tennis ball vertically upward. The ball returns to the point of release after 3.56. What is the speed of the ball as it is released? (A) 0 m/s (B) 14 m/s (C) 17 m/s (D) 21 m/s 12. A tennis ball is thrown from ground level with velocity directed 30° above the horizontal, if it takes the ball 106 to reach the top of its trajectory, what is the magnitude of the initial velocity? (A) 4.9 m/s (C) 11.3 m/s (B) 9.8 m/s (D) 19.6 m/s 13. A cannonball is fired with initial velocity of 10 m/s at an angle of 25" above the horizontal. What is the horizontal distance covered by the cannonball landed on the same level? (C) 4.3 m (D) 7.8 m (A) 0.43 m (B) 0.78 m Item 14-15: A shell is fired with a horizontal velocity in the positive x-direction from the top of an 80-m high cliff. The shell strikes the ground 1330 m from the base of the cliff (Drawing is not to scale), 80 m 1330 m 14. What is the magnitude of the acceleration of the shell just before it strikes the ground? (A) 4.9 m/s (C) 330 m/s (B) 9.8 m/s (D) 170 m/s 15. Determine the initial speed of the shell. (A) 330 m/s (B) 4.0 m/s (A) (B) 2r (C) 170 m/s (D) 9.8 m/s Item 16-19: A racecar, traveling at constant speed, makes one lop around a circular track of radius r in a time t 16. What is the displacement of the racecar at the end of one lap? PHY (A) zero (C) (0) (D) 17. When the car has traveled halfway around the track, what is the magnitude of its displacement from the starting point? (C) RE (D) 2nr
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