A rock is thrown at a window that is located 18.0 m above the ...

[magmichele12]

A rock is thrown at a window that is located 18.0 m above the ground. The rock is thrown at an angle of 40.0 above horizontal. The rock is released from a height of 2.00 m above the ground with a speed of 30.0 m/s.
 
  If the rock strikes the window on its upward trajectory, from what horizontal distance from the window was it released? A)
 
  53.2 m
 
  B)
 
  48.7 m
 
  C)
 
  71.6 m
 
  D)
 
  29.8 m
 
  E)
 
  27.3 m

Question 2

A 2.00-kg mass object traveling east at 20.0 m/s collides with a 3.00-kg mass object traveling west at 10.0 m/s.
 
  After the collision, the 2.00-kg mass has a velocity 5.00 m/s to the west. How much kinetic energy was lost during the collision?
  A)
 
  0.00 J
 
  B)
 
  458 J
 
  C)
 
  516 J
 
  D)
 
  91.7 J
 
  E)
 
  175 J

[yasmin]

Answer to Question 1

E

Answer to Question 2

B

[magmichele12]

Thank you!

[yasmin]

Always glad to help...