The center of mass of this system continues along the projectile path until the

Question

The center of mass of this system continues along the projectile path until the center of mass reaches the moon's surface again. continues along the projectile path until at Least one of the pieces reaches the moon's surface. continues along the projectile path until two of the pieces collide with each other. immediately deviates from the projectile path. In deep outer space (no gravity), two unequal masses are connected to each other by a spring that is held in a compressed state. The two masses are initially not moving (relative to some inertial reference frame) and there is no rotation. Suddenly, the Locking mechanism holding the spring in a compressed state gives way, causing the two masses to oscillate. The center of mass of this system does not move. moves with constant (non-zero) velocity. oscillates around some equilibrium point. executes some complicated motion not described by any of the other answers. The midpoint between the two masses (i.e, the point whose position is given by does not move. moves with constant (non-zero) velocity. oscillates around some equilibrium point. executes some complicated motion not described by any of the other answers. Recall that the total kinetic energy of the system can be expressed as the sum of Kcm (the kinetic energy that the system would have if all of its mass were Located at the center of mass) and Krel (the kinetic energy of the system as measured in the center of mass reference frame). The value of Kcm in the two masses + spring example above is always zero. is constant (not zero). varies. The value of Krel is always zero. is constant (not zero). varies. Two objects collide. Under what circumstances is total momentum conserved? In all collisions (so long as external forces can be neglected). Only in inelastic collisions. Only in elastic collisions. Only under very specific circumstances.

Explanation / Answer

1) continues along the projectile path until the center of mass reaches the moon's surface again

2) Oscillatws around some equilibrium point

3) moves with constant velocity

4) is constant

5) varies

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