A 1000-kg car is traveling north at 20.0 m/s. A 1500-kg car is ...

[ishan]

A 1000-kg car is traveling north at 20.0 m/s. A 1500-kg car is traveling north at 36.0 m/s. The 1500-kg collides with the rear of the 1000-kg car and they lock together.
 
  Ignoring external forces acting during the collision, what is the velocity of the cars immediately after the collision? A)
 
  56.0 m/s north
  B)
 
  29.6 m/s north
  C)
 
  13.6 m/s south
  D)
 
  8.00 m/s south
  E)
 
  28.0 m/s north

Question 2

A child throws a ball with an initial speed of 8.00 m/s at an angle of 40.0 above the horizontal. The ball leaves her hand 1.00 m above the ground. At what angle below the horizontal does the ball approach the ground?
 
  A)
 
  35.1
 
  B)
 
  38.6
 
  C)
 
  48.0
 
  D)
 
  40.0
 
  E)
 
  65.2

[TDubDCFL]

Answer to Question 1

B

Answer to Question 2

C

[ishan]

Gracias!

[xiaomengxian]

Thanks for the timely response, appreciate it