The figure shows a block on an inclined plane. What is the ...

[Haya94]

The figure shows a block on an inclined plane.
 
  What is the expression for the normal force acting on the block?
   
  a.
  Mg
   
  b.
  Mgcos
   
  c.
  Mgsin
   
  d.
  Mgtan

Question 2

A disk of mass m moving in the positive x direction collides with a stationary disk, also of mass m. The first disk moves in a direction 1 with respect to the x axis, and the second disk moves off in a direction of 2 below the x axis, as shown in the figure.
 
  If v = 10 m/s, 1 = 30, and v1f = 8 m/s, what is v2f?
   
  a.
  6.9 m/s
   
  b.
  6.1 m/s
   
  c.
  2.0 m/s
   
  d.
  8.7 m/s

[mcni194]

Answer to Question 1

b

Answer to Question 2

b

[Haya94]

Thanks for the timely response, appreciate it

[peter]

Gracias!