Multiple Choice
The center of mass of a system of particles obeys an equation similar to Newton's second law where:
A) is the total internal force and m is the total mass of the system
B) is the total internal force and m is the mass acting on the system
C) is the total external force and m is the total mass of the system
D) is the force of gravity and m is the mass of Earth
E) is the force of gravity and m is the total mass of the system
Correct Answer:

Verified
Correct Answer:
Verified
Q12: Blocks A and B are moving toward
Q31: If the total momentum of a system
Q33: A block moves at 5 m/s in
Q37: A 3-g bullet is fired horizontally into
Q37: Block A, with a mass of 2.0
Q44: A 2.5-kg stone is released from rest
Q49: A 2.0-kg mass is attached to one
Q53: Two objects, X and Y, are held
Q56: A uniform narrow bar, resting on ice,
Q61: At the same instant that a 0.50-kg