19. Two motorcycles are involved in a head on collision. Motorcycle A has a mass of 20o kg and was travelling at120 km/h south. Motorcycle B has a mass of 250 kg and was travelling north at 100 km/hr. A and B are about tocollide. Calculate the momentum of the system before the collision takes place.A. -279 kg m/sВ.33.33 kg m/sC. 27. 78 kg m/sD. 279 kg m/s

Given : m1 = 200 kg v1 = -120 km/hr = -120(1000/3600) = -33.33 m/s (negative because of south…

Answered: 19. Two motorcycles are involved in a…

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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2. A 0.45-kg ball, moving east with a speed of 4.90 m/s, has a head-on collision with a 0.900-kg ball initially at rest. a. Draw a picture of the problem and write all the given quantities. b. Assuming a perfectly elastic collision, what will be the speed and direction of each object after the collision?
3. Two skaters are facing each other with their hands touching. The two skaters are at rest. After they push apart the girl has a velocity of 3.5 m/s and mass 45 kg. The boy has a velocity of 2 m/s. What is the boy's mass? Before After
b. A 400 kg object moving at a speed of 5 m/s to the right collides with a 600 moving at 2 m/s to the left. After the collision, the 600 kg object moves to the right at a speed of 3 m/s. Determine, i. the velocity of the 400 kg object after the collision ii. The loss in KE after collision, if any.
A rubber ball and a lump of clay have equal mass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. The clay sticks to the wall. Which one of these objects experiences the greater momentum change? Select one: a. the ball b. the clay c. Both of them experience the same non-zero momentum change. d. Both of them experience zero momentum change.
7. A 0.05 kg golf ball moving at 40 m/s collides with a 0.75 kg wooden block at rest. The golf ball bounces off the block and travels in the opposite direction at -10 m/s. a. What is the momentum of the golf ball before it collides with the block? b. What is the velocity of the block right after the collision?
1. A0.12-kg ball is moving at 6 m's when it is hit by a bat, causing it to reverse direction and have a specd of 14 m/s. What is the magnitude of the change in the momentum of the ball? a. 0.39 kg m's b. 0.42 kg-m's c. 1.3 kg-m's d. 2.4 kg-m's 2. Alex throws a 0.15-kg rubber ball down onto the floor. The ball's speed just before impact is 6.5 m/s, and just after is 3.5 m's. What is the magnitude of the change in the ball's momentum? a. 0.09 kg m/s b. 1.5 kg-m/s c. 4.3 kg-m/s d. 126 kg m/s
2. A 2.0 kg ball traveling east at +4.0 m/s collides head-on with a 1.0 kg ball traveling west at - 8.0 m/s. After the collision, the two balls stick together. What is the final velocity of the two balls stuck together after the collision? Before After
Two teenagers are ice skating. Steve has a mass of 65.0 kg and has an initial velocity of 4.14 m/s (West). Betty has a mass of 45.0 kg and has an initial velocity of 0.650 m/ (East). They collide and grab on to each other when that happens. What is their combined velocity after the collision? S Select one: a. b. C. d. 2.18 m/s West 2.18 m/s East 2.71 m/s East 2.71 m/s West
QUESTION 2 A 1,000-kg car is initially traveling due east at 26 m/s when it collides with a 2,000-kg truck that is initially traveling due west at 10 m/s. When the cars collide, they stick together. What is the speed of the total wreckage after the collision? a. 4.0 m/s b.1.0 m/s OC. 3.0 m/s Od. 5.0 m/s O e. 2.0 m/s
A green car with mass 1200 kg is travelling east at 40 m/s. Simultaneously, a yellow car with mass 1500 kg is travelling north at 30 m/s. They collide in a perfectly inelastic collision, such that there is no rotation. a. During the collision, which car experiences the greater force? b. What is the momentum of each car before the collision? c. What is the magnitude of the momentum of the two combined cars after the collision? d. What is the speed (magnitude) of the two cars after the collision? e. What is the direction of the motion of the cars after the collison?
9. A 2500 kg truck moving at 10.00 m/s strikes a car waiting at a traffic light, hooking bumpers. The two continue to move together at 7.00 m/s. What was the mass of the struck car? A. 1730 kg B. 1550 kg C. 1200 kg D. 1070 kg E. 967 kg
QUESTION 15 When two billiard balls collide, the collision force as a function of time follows the graph shown below. What is the magnitude of the impulse during the collision? F(N) 500 250 - t(ms) 0.0 2.0 4.0 6.0 O a. 1.2 N-s b. 1.0 N-s OC. 0.80 N-s Od.0.50 N-s e.n20 N o

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