A ball bearing rolls along a smooth horizontal tabletop, and crashes head-on into a second ball bearing of half its mass. If both ball bearings roll in the x-direction only (either positive or negative) and the initially stationary ball bearing is observed to have a velocity of +2.4 m/s after the collision, what was the velocity of the first ball bearing after the collision?
A. -2.4 m/s
B. +2.4 m/s
C. -1.2 m/s
D. +1.2 m/s
E. -0.6 m/s
F. +0.6 m/s
F. +0.6 m/s
You might also like to view...
A 120 N traffic light is located at the midpoint of a cable between two poles. The cable makes and angle of 30to the horizontal at each pole. What is the tension in the cable?
A. 60.0 N B. 90.0 N C. 140 N D. 110 N E. 120 N
To accelerate your car at a constant acceleration, the car's engine must
A) maintain a constant power output. B) develop ever-decreasing power. C) develop ever-increasing power. D) maintain a constant turning speed.
Consider the graph of expansion models. Which model(s) predicts that galaxies will eventually get closer together?
A) accelerating B) coasting C) critical D) recollapsing E) all of them F) none of them
Describe the differences between secular and diffuse reflection
What will be an ideal response?