Author Question: A 6.0-kg object moving 5.0 m/s collides with and sticks to a 2.0-kg object. After the collision the ... (Read 152 times)

FButt · **on:** Jul 28, 2018

A 6.0-kg object moving 5.0 m/s collides with and sticks to a 2.0-kg object. After the collision the composite object is moving 2.0 m/s in a direction opposite to the initial direction of motion of the 6.0-kg object. Determine the speed of the 2.0-kg object before the collision.
a. 15 m/s
b. 7.0 m/s
c. 8.0 m/s
d. 23 m/s
e. 11 m/s

Question 2

A 2.0-kg object moving with a velocity of 5.0 m/s in the positive x direction strikes and sticks to a 3.0-kg object moving with a speed of 2.0 m/s in the same direction. How much kinetic energy is lost in this collision?
a. 2.4 J
b. 9.6 J
c. 5.4 J
d. 0.6 J
e. 6.0 J