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- https://phys.libretexts.org/Courses/Merrimack_College/Conservation_Laws_Newton's_Laws_and_Kinematics_version_2.0/05%3A_C5)_Conservation_of_Momentum/5.03%3A_ExamplesA soccer player receives a pass in the air from a teammate and immediately fires the ball along the ground into the goal. (b) According to Equation (3.3.3), the velocity of the center of mass, \(v_{cm...A soccer player receives a pass in the air from a teammate and immediately fires the ball along the ground into the goal. (b) According to Equation (3.3.3), the velocity of the center of mass, vcm, is just the same as what we just calculated (Equation ???) above). Also, if the system is isolated, the center of mass velocity should be the same before and after the collision.
- https://phys.libretexts.org/Courses/Gettysburg_College/Gettysburg_College_Physics_for_Physics_Majors/02%3A_C2)_Particles_and_Interactions/2.04%3A_ExamplesIf the speed of the ball after it bounces, vyf, is 75\% of the speed right before it hits, what was the impulse the floor delivered to the ball? If the ball interacts with the floor for a time ...If the speed of the ball after it bounces, vyf, is 75\% of the speed right before it hits, what was the impulse the floor delivered to the ball? If the ball interacts with the floor for a time period Δt, find an expression for the ratio between the average force the floor acted on the ball with to the weight of the ball mg, in terms of vyi, vyf, g, and Δt.
- https://phys.libretexts.org/Courses/Merrimack_College/Conservation_Laws_Newton's_Laws_and_Kinematics_version_2.0/02%3A_C2)_Particles_and_Interactions/2.04%3A_ExamplesIf the speed of the ball after it bounces, vyf , is 75\% of the speed right before it hits, what was the impulse the floor delivered to the ball? If the ball interacts with the floor for a time...If the speed of the ball after it bounces, vyf , is 75\% of the speed right before it hits, what was the impulse the floor delivered to the ball? If the ball interacts with the floor for a time period Δt, find an expression for the ratio between the average force the floor acted on the ball with to the weight of the ball mg, in terms of vyi , vyf , g, and Δt.
- https://phys.libretexts.org/Courses/Gettysburg_College/Gettysburg_College_Physics_for_Physics_Majors/05%3A_C5)_Conservation_of_Momentum/5.03%3A_ExamplesThis is because if they are on ice, there is very little friction and the only external forces on the hockey players are gravity and the normal force, which lead to a net zero force. (I assume this is...This is because if they are on ice, there is very little friction and the only external forces on the hockey players are gravity and the normal force, which lead to a net zero force. (I assume this is why we are using hockey players instead of football/soccer/rugby/etc. Also, if the system is isolated, the center of mass velocity should be the same before and after the collision.
