How do plexiglass barriers keep people safe at a hockey game? * 1 point
Delestas To
NH. COM
It keeps the players inside the rink,
It helps fans see the game better.
It absorbs the energy of a flying puck

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not