An object of mass m moving with a certain speed has a kinetic ...

[colton]

An object of mass m moving with a certain speed has a kinetic energy of 0.0124 J. The object collides with a horizontal spring and compresses it by 0.800 m before it is brought to rest. What is the spring constant of this spring?
 
  A) 0.315 N/m
  B) 0.150 N/m
  C) 0.194 N/m
  D) 0.0235 N/m
  E) 0.0388 N/m

Question 2

A snowboarder coasts on a smooth track that rises from one level to another. If the snowboarder's initial speed is 4 m/s, the snowboarder just makes it to the upper level and comes to rest.
 
  With a slightly greater initial speed of 5 m/s, the snowboarder is still moving to the right on the upper level. What is the snowboarder's final speed in this case? A) 1 m/s
  B) 2 m/s
  C) 3 m/s
  D) 4 m/s
  E) 5 m/s

[djofnc]

Answer to Question 1

E

Answer to Question 2

C

[colton]

Thanks

[djofnc]

Welcome