Consider the diagram which shows a 2D collision between two balls of identical mass (the darker ball is initially at rest). What, if anything, is wrong with this collision? [select ALL of the correct statements from the list below] before 2.0 m/s after 1.89 m/s 0.85 m/s 25° 70⁰ The momentum is not conserved in the horizontal direction The kinetic energy decreases but it should not for this type of collision The momentum is not conserved in the vertical direction The kinetic energy is greater after the collision

A 100 g cart initially moving at +0.5 m/s collides elastically from a stationary 180 g cart. Calculate the change in the momentum of the 100 g cart.

Sammy with a mass of 20 kg and his mother the mass of 40 kg are at rest 10 m apart. The father of mass 80 kg slides along the path at 15 m/s. He collides with the mother and she bounces ahead to collide with Sammy. If all collisions are perfectly elastic and one dimensional and there is no friction on the straight and level path, calculate the speed of Sammy

ball 1 (1kg) moves at 1m/s strikes stationary ball 2 (1kg). Ball 1 stops, ball 2 moves away at 1m/s. Is momentum,KE, or both coversed? Explain. Is this elasic collision or inelastic collison?

A 1 kg mass moves on a horizontal surface and collides with a 2 kg mass, initially at rest.  The masses stick together and move as a single mass.  the velocity of the system after the collision is ________ the velocity of the 1 kg mass before the collision

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I.  A lump of clay (m = 3.01 kg) is thrown towards a wall at speed v = 3.15 m/s.  The lump sticks to the wall.  (a) What kind of collision is it?  Is momentum conserved during this collision?  Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic energy lost during this collision.   II.  Same lump is thrown towards the same wall, but this time it bounces off the wall at speed of 3.15 m/s. (a) What kind of collision is it?  Is momentum conserved during this collision?  Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic energy lost during this collision.   III.  Same lump is thrown towards the same wall, but this time it bounces off the wall at speed of 2.24 m/s. (a) What kind of collision is it?  Is momentum conserved during this collision?  Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic…

A 7,300-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 2 m/s. Compute how much kinetic energy was "lost" in this inelastic collision. ___________ J