A 340-g air track cart traveling at 1.25 m/s collides elastically ...

[javeds]

A 340-g air track cart traveling at 1.25 m/s collides elastically with a 300-g cart traveling in the opposite direction at 1.33 m/s. What is the speed of the 300-g cart after the collision?
 
  A) 2.80 m/s
  B) 0.0693 m/s
  C) 0.899 m/s
  D) 1.41 m/s
  E) 0.475 m/s

Question 2

A plate falls vertically to the floor and breaks up into three pieces, which slide along the floor.
 
  Immediately after the impact, a 320-g piece moves along the x-axis with a speed of 2.00 m/s and a 355-g piece moves along the y-axis with a speed of 1.50 m/s. The third piece has a mass of 100 g. In what direction does the third piece move? You can neglect any horizontal forces during the crash.
  A) 216.9 from the x-axis
  B) 219.8 from the x-axis
  C) 36.9 from the x-axis
  D) 39.9 from the x-axis
  E) 39.8 from the x-axis

[Bison]

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[javeds]

Thank you!

[Bison]

Always glad to help...

[Tiffany Guerrero]

Thank you