College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- (a) Calculate the x and y components of ball 1’s momentum before and after the collision. The mass of each pool ball is 0.16 kg. Remember that momentum is a vector quantity and the signs of the components indicate the direction of travel. (b) Use a before and after analysis to calculate the x and y components of ball 2’s velocity after the collision.arrow_forwardA particle with a mass of 1.90 kg is acted on by a force Fx acting in the x-direction. If the magnitude of the force varies in time as shown in the figure below, determine the following. (a) impulse of the force (in kg · m/s ) kg · m/s (b) final velocity of the particle (in m/s) if it is initially at rest m/s (c) Find the final velocity of the particle (in m/s) if it is initially moving along the x-axis with a velocity of −25.00 m/s. m/sarrow_forwardA 0.05 kg ball strikes a wall with a velocity v1 = -25 m/s and bounces back with a velocity v2 =5 m/s. If the collision lasts 0.2 s, then find the average force (in N) exerted on the ball.arrow_forward
- A squid with an initial mass of 5.15 kg is initially at rest when it ejects 0.275 kg of fluid with a velocity of 7.5 m/s. Part (a) What is the recoil velocity, in meters per second, of the squid if the ejection is done in 0.12 s and there is a 5.15-N frictional force upposing the squid's movement? Use a coordinate system in which the ink is moving in the positive direction. Part (b) What is the difference in kinetic energy, in joules, between the case when there is no friction and the case where there is friction? Ejostarrow_forwardAn 70 kg basketball player lands from a jump and tries to stop her forward motion or momentum. The normal contact force exerted by the floor on her shoes is 2800 N. The frictional force exerted by the floor on her shoes is 800 N and this force acts posteriorly on the player. There was minimal medial-lateral force during the landing and so this component of the ground reaction force can be ignored. What is the resultant ground reaction force exerted by the floor on the basketball player's shoes? How many times greater than the player's body weight is this resultant ground reaction force calculated in part the first part?arrow_forwardNeeds Complete typed solution with 100 % accuracy.arrow_forward
- Objects shown in the figure collide and stick and move together (no friction is considered). Consider positive direction from left to right. Find the velocity after the colision m,=2 kg V,= 8 m/s m= 4 kg V= 10 m/sarrow_forwardAn 70 kg basketball player lands from a jump and tries to stop her forward motion or momentum. The normal contact force exerted by the floor on her shoes is 2800 N. The frictional force exerted by the floor on her shoes is 800 N and this force acts posteriorly on the player. There was minimal medial-lateral force during the landing and so this component of the ground reaction force can be ignored. What is the resultant ground reaction force exerted by the floor on the basketball player's shoes? How many times greater than the player's body weight is this resultant ground reaction force calculated in part a)?arrow_forwardA billiard ball moving at 5.95 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.93 m/s, at an angle of 34° with respect to the original line of motion. (a) Find the velocity (magnitude and direction) of the second ball after collision. (Enter the direction with respect to the original line of motion. Include the sign of your answer. Consider the sign of the first ball's angle.) m/s (b) was the collision inelastic or elastic? O inelastic O elasticarrow_forward
- Please refer to image for questions!arrow_forwardUse the worked example above to help you solve this problem. A car with mass 1.54 x 103 kg traveling east at a speed of 29.7 m/s collides at an intersection with a 2.47 x 103 kg van traveling north a speed of 17.2 m/s, as shown in the figure. Find the magnitude and direction of the velocity of the wreckage after the collision, assuming that the vehicles undergo a perfectly inelastic collision (that is, they stick together) and assuming that friction between the vehicles and the road can be neglected. 0.8 magnitude Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. m/s direction 47.11 ° counterclockwise from the +x-axisarrow_forwardA pendulum of length L = 0.98 m hangs at rest with 2.0 kg bob. The string is of negligible mass. A smaller 0.10 kg mass is traveling to the left at 20.0 m/s and has an elastic collision with the pendulum bob. Assume that positive is to the right. a) What is the velocity of the bob immediately after the elastic collision?arrow_forward
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