Shelly rolls ball a in the positive x direction with a velocity of 7.5 meters/second. it hits stationary ball b and they undergo elastic collision. the two balls have different masses. which of the following statements is true?

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

Asher cycles 12 miles in 16 hours. what is his speed?

What object a collides with object b and bounces back its final momentum is?