Author Question: 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 ... (Read 126 times)

ishan · **on:** Jul 29, 2018

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