A firecracker bursts while freely falling. The combined momentum of its fragments
A) equals the momentum of the firecracker at the time of burst
B) cancels to the firecracker's momentum at the time of bursting.
C) cancels to zero.
D) none of the above
Answer: A
You might also like to view...
An alloy is produced that is 40 atomic % Ni and 60 atomic % Cu.
The two teams involved in the discovery of the cosmic microwave background radiation were at:
A) NRAO and Cal Tech. B) JPL and the Hubble Space Institute. C) Kitt Peak and the University of Arizona. D) Bell Labs and Princeton. E) Mt. Palomar and the VLA.
It is possible that there are moons within habitable zones that have habitable surfaces in other solar systems
Indicate whether the statement is true or false
Foucault's pendulum:
a. continues to swing back and forth in the same fixed direction relative to the ground. b. keeps swinging faster because the centrifugal force of Earth's rotation affects its weight. c. changes how far it goes on each swing because of Earth's motion around the Sun. d. changes the direction of its back and forth swing because Earth rotates beneath it. e. changes the direction of its back and forth swing because of gravity.