Author Question: A hobby rocket reaches a height of 72.3 m and lands 111 m from the launch point with no air ... (Read 67 times)

sammy · **on:** Jul 29, 2018

A hobby rocket reaches a height of 72.3 m and lands 111 m from the launch point with no air resistance. What was the angle of launch?

A) 69.0
B) 67.4
C) 22.6
D) 44.8

Question 2

Two air track carts move along an air track towards each other. Cart A has a mass of 450 g and moves toward the right with a speed of 0.850 m/s and air track cart B has a mass of 300 g and moves toward the left with a speed of 1.12 m/s.

What is the total momentum of the system? A) 0.047 kgm/s toward the right
B) 0.719 kgm/s toward the right
C) 0.719 kgm/s toward the left
D) 0.750 kgm/s toward the right
E) 0.750 kgm/s toward the left