A 1.0-kg block and a 2.0-kg block are pressed together on a ...

[Wadzanai]

A 1.0-kg block and a 2.0-kg block are pressed together on a horizontal frictionless surface with a compressed very light spring between them. They are not attached to the spring. After they are released and have both moved free of the spring
 
  A) the magnitude of the momentum of the heavier block will be greater than the magnitude of the momentum of the lighter block.
  B) the heavier block will have more kinetic energy than the lighter block.
  C) both blocks will both have the same amount of kinetic energy.
  D) the lighter block will have more kinetic energy than the heavier block.
  E) both blocks will have equal speeds.

Question 2

An object that weighs 75.0 N is pulled on a horizontal surface by a horizontal pull of 50.0 N to the right. The friction force on this object is 30.0 N to the left. The acceleration of the object is closest to
 
  A) 0.267 m/s2
  B) 1.07 m/s2
  C) 2.61 m/s2
  D) 10.5 m/s2

[helenmarkerine]

Answer to Question 1

D

Answer to Question 2

C

[Wadzanai]

Thank you!

[helenmarkerine]

Always glad to help...