A girl of mass throws a ball up against a wall.  The ball strikes the wall horizontally and it bounces back with the same speed. How do you conceptualize, if the question asks whether or not a change in momentum occurs -- whether momentum depends on speed, mass of ball, so forth?

A truck with a mass of 2020 kg and moving with a speed of 17.0 m/s rear-ends a 832 kg car stopped at an intersection. The collision is approximately elastic since the car is in neutral, the brakes are off, the metal bumpers line up well and do not get damaged. (a) Calculate the initial momentum of the truck (in kg m/s).  kg m/s (b) Calculate the final velocities (in m/s) for the truck and the car. vtf= m/svcf= m/s (c) Calculate the total momentum (in kg m/s) of the truck AND the car after the collision.  kg m/s (d) Did you expect the results that you got for Part (a) and (c)?  Yes, since momentum is conserved in a collision with no external forces acting on the colliding objects.No, since there were no forces acting on either the car or the truck during the collision.    No, since kinetic energy may not be conserved.Yes, since the collision is inelastic.

If you are flying in a large airplane in quiet air, and a friend across the aisle tosses you her hand sanitizer bottle, what is the direction of the momentum of the bottle as you see it.     Toward your friend, plus some downward motion due to gravitational acceleration     Toward the front of the plane due to the plane's velocity     None.  Momentum does not have direction, only magnitude.     Toward yourself, and a little downward because of gravitational acceleration downward

a 0.20 kg ball traveling horizontally at 28 m/s, strikes a wall and rebounds at 16 m/s. what is the magnitude of the balls change in momentum durong the rebound?