A 3.0-kg mass is released from rest at point A of a circular ...

[Chelseaamend]

A 3.0-kg mass is released from rest at point A of a circular frictionless track of radius 0.40 m as shown in the figure. The mass slides down the track and collides with a 1.4-kg mass that is initially at rest on a horizontal frictionless surface. If the masses stick together, what is their speed after the collision?
 
   

   
  a.
  2.1 m/s
   
  b.
  1.7 m/s
   
  c.
  1.9 m/s
   
  d.
  1.5 m/s
   
  e.
  2.3 m/s

Question 2

Two equal masses are raised at constant velocity by ropes that run over pulleys, as shown below. Mass B is raised twice as fast as mass A. The magnitudes of the forces are F_A and F_B, while the power supplied is respectively P_A and P_B. Which statement is correct?
 
 
 
   
  a.
  F_B = F_A; P_B = P_A.
   
  b.
  F_B = F_A; P_B = 2 P_A.
   
  c.
  F_B = 2 F_A; P_B = P_A.
   
  d.
  F_B = 2 F_A; P_B = 2 P_A.
   
  e.
  P_A = F_A; P_B = F_B.

[Chou]

Answer to Question 1

c

Answer to Question 2

b

[Chelseaamend]

Both answers were spot on, thank you once again

[Chou]

Great! Please up vote