A 2.0-kg block situated on a frictionless incline is connected to ...

[Wadzanai]

A 2.0-kg block situated on a frictionless incline is connected to a light spring (k = 100 N/m), as shown. The block is released from rest when the spring is unstretched. The pulley is frictionless and has negligible mass. What is the speed of the block when it has moved 0.20 m down the plane?
 
   

   
  a.
  76 cm/s
   
  b.
  68 cm/s
   
  c.
  60 cm/s
   
  d.
  82 cm/s
   
  e.
  57 cm/s

Question 2

The horizontal surface on which the block slides is frictionless. The speed of the block before it touches the spring is 6.0 m/s. How fast is the block moving at the instant the spring has been compressed 15 cm? k = 2.0 kN/m
 
   

   
  a.
  3.7 m/s
   
  b.
  4.4 m/s
   
  c.
  4.9 m/s
   
  d.
  5.4 m/s
   
  e.
  14 m/s

[morrie123456]

Answer to Question 1

c

Answer to Question 2

a

[Wadzanai]

Both answers were spot on, thank you once again

[morrie123456]

Great! Please up vote