A white billiard ball, moving horizontally strikes a red billiard ball, at rest. Before impact, the white ball was moving at a speed of 2.50 m/s and angle of 21° from the horizontal, and after impact it is moving at 0.50 m/s at 45° from the horizontal. a. If the two balls have equal masses of 160 g, what is the velocity of the red ball after the impact? Include its magnitude and direction. b. Is the collision elastic? Show how you know this.

A white billiard ball, moving horizontally strikes a red billiard ball, at rest. Before impact, the white ball was moving at a speed of 2.50 m/s and angle of 21° from the horizontal, and after impact it is moving at 0.50 m/s at 45° from the horizontal. a. If the two balls have equal masses of 160 g, what is the velocity of the red ball after the impact? Include its magnitude and direction. b. Is the collision elastic? Show how you know this.

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)...

See similar textbooks

Similar questions

1
Kyle, a 80.0 kg football player, leaps straight up into the air (with no horizontal velocity) to catch a pass. He catches the 0.430 kg ball precisely at the peak of his jump, when he is 0.386 meters off the ground. He hits the ground 0.0384 meters away from where he leapt. If the ball was moving horizontally when it was caught, how fast was the ball traveling? ball's speed: m/s
3. A duck has a mass of 2lbm and is flying due west at 10 ft/s. The duck is struck by a bullet with a mass of 0.05 lbm, which is moving due east at 1000 ft/s. Treating the due west at positive x direction and the duck as the system. a) what is the relative velocity of the duck and the bullet, relatively. V = Vsys + Vrel
→ A student runs an experiment with two carts on a low-friction track. As measured in the Earth reference frame, cart 1 (m 0.36 kg) moves from left to right at 1.0 m/s as the student walks along next to it at the same velocity. (a) What velocity v E2,¡ in the Earth reference frame must cart 2 (m 0.12 kg) have before the collision if, in the student's reference frame, cart 2 comes to rest right after the collision and cart 1 reverses direction and travels from right to left at 0.33 m/s? (b) What does the student measure for the momentum of the two-cart system? (c) What does a person standing in the Earth reference frame measure for the momentum of each cart before the collision? .. =
A block of mass m1 = 16 kg slides along a horizontal surface (with friction, μk = 0.21) a distance d = 2.25 m before striking a second block of mass m2 = 9.75 kg. The first block has an initial velocity of v = 7.25 m/s. A: Assuming that block one stops after it collides with block two, what is block two's velocity after impact in m/s? B: How far does block two travel, d2 in meters, before coming to rest after the collision?
A 5.75 x 10°-kg rocket takes off from the moon where the acceleration due to gravity is 1.60 m/s2 by exhausting 5.00 kg of gas per second at a speed of 2.20 x 10° m/s. Determine the acceleration of the rocket. m/s2 Additional Materials
Please asap
6. A projectile is fired with a velocity of 50 meters per second at an angle of 30° with the horizontal. What is the magnitude of the vertical component of the velocity at the time the projectile is fired? (1) 25 m/s (3) 75 m/s (2) 50 m/s (4) 100 m/s Proof: Show calculation. 7. Four cannonballs, each with mass M and initial velocity V are fired from a cannon at different angles relative to the ground. Neglecting air friction, which angular direction of the cannon produces the greatest projectile height? (1) 90° (3) 45° (2) 70° (4) 20° Proof: Explain. 8. A ball is thrown with an initial velocity V at an angle 0 above the horizontal. Which of the graphs below best represents the relationship between the ball's horizontal speed as it moves toward its maximum height and time? [Neglect friction]
A 57.0-g tennis ball is traveling straight at a player at 19.0 m/s. The player volleys the ball straight back at 22.0 m/s. If the ball remains in contact with the racket for 0.060 0 s, what average force acts on the ball? 18.05 N 20.9 N 38.95 N 2.85 N O 57 N
6. A 60 kg astronaut is on a spacewalk when the tether line to the shuttle breaks. The astronaut is able to throw a spare 15 kg oxygen tank in a direction away from the shuttle with a speed of 10 m/s, propelling the astronaut back to the shuttle. Assuming that the astronaut starts from rest with respect to the shuttle, find the astronaut's final speed with respect to the shuttle after the tank is thrown.
Kyle, a 95.0 kg football player, leaps straight up into the air (with no horizontal velocity) to catch a pass. He catches the 0.430 kg ball precisely at the peak of his jump, when he is 0.538 meters off the ground. He hits the ground 0.0333 metersaway from where he leapt. If the ball was moving horizontally when it was caught, how fast was the ball traveling? ball's speed: ? m/s
2. A 62 kg student stands on a 36 kg cart that is free to move in any direction. The cart and student are moving together with a velocity of 2.7 m/s [S]. The student then starts to walk so that her velocity is 3.1m/s [ E25oN] relative to the floor. Calculate the new velocity of the cart.