(II) Two billiard balls of equal mass move at right angles and meet at the origin of an xy coordinate system. Initially ball A is moving along the y axis at +2.0 m/s, and ball B is moving to the right along the x axis with speed +3.7 m/s. After the collision (assumed elastic), the second ball is moving along the positive y axis (Fig. 9-43). What is the final direction of ball A, and what are the speeds of the two balls? +y 2 bas VB B l babaolioria. occnb rpe alortd – +x B 0. vB = 3.7 m/saib ai olon Isma thRTA = 2.0 m/s

(II) Two billiard balls of equal mass move at right angles and meet at the origin of an xy coordinate system. Initially ball A is moving along the y axis at +2.0 m/s, and ball B is moving to the right along the x axis with speed +3.7 m/s. After the collision (assumed elastic), the second ball is moving along the positive y axis (Fig. 9-43). What is the final direction of ball A, and what are the speeds of the two balls? +y 2 bas VB B l babaolioria. occnb rpe alortd – +x B 0. vB = 3.7 m/saib ai olon Isma thRTA = 2.0 m/s

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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(III) Billiard balls A and B, of equal mass, move at right angles and meet at the origin of an xy coordinate system as shown in Fig. 7–36. Initially ball A is moving along the y axis at +2.0 m/s, and ball B is moving to the right along the x axis with speed +3.7 m/s. After the collision (assumed elastic), ball B is moving along the positive y axis (Fig. 7–36) with velocity V'g. What is the final direc- tion of ball A, and what +y are the speeds of the two balls? 'B B B) +x FIGURE 7-36 Problem 46. в 3 3.7 m/s (Ball A after the collision is [VA = 2.0 m/s (A not shown.)
A ball falls from height of 20.0 m, hits the floor, and rebounds vertically upward to height of 15.5 m. Assume that mhall = 0.255 kg. (a) What is the impulse (in kg • m/s) delivered to the ball by the floor? magnitude kg • m/s direction --Select-- (b) If the ball is in contact with the floor for 0.0300 seconds, what is the average force (in N) the floor exerts on the ball? magnitude direction --Select--
In an elastic collision in which there are no external forces, which of the following is true? Only the total momentum is conserved. Only the kinetic energy is conserved Both the total momentum and kinetic energy are conserved. Both the total momentum and kinetic energy are not conserved.
Before In a crash test, a car of mass 1500 kg collides with a wall and rebounds as in the figure. The initial and final velocities of the car are v, = -15.0 m/s and v = 2.6 m/s respectively. If the collision lasts for 0.15 s find (A) the impulse delivered to the car due to the collision and (B) the magnitude and -15.0 m/s After direction of the net force exerted on the car. +2.60 m/s
Jumping up before the elevator hits. After the cable snaps and the safety system fails, an elevator cab free-falls from a height of 34 m. During the collision at the bottom of the elevator shaft, a 90 kg passenger is stopped in 6.0 ms. (Assume that neither the passenger nor the cab rebounds.) (a) What is the magnitude of the impulse on the passenger during the collision?(b) What is the magnitude of the average force on the passenger during the collision? Suppose the passenger were to jump upward with a speed of 6.5 m/s relative to the cab floor just before the cab hits the bottom of the shaft. Assume the same stopping time as above. (c) What is the magnitude of the impulse on the passenger during the collision?(d) What is the magnitude of the average force on the passenger during the collision?