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6. A system of particles is known to have a total kinetic energy of zero. This means the total momentum of the system is also zero. 7. A system of particles is known to have a total momentum of zero. This means the total kinetic energy of the system is also zero. 8. A net force of 200 N acts on a 100 kg boulder, and a force of the same magnitude acts on a 130-g pebble. The rate of change of the boulder's momentum is equal to the rate of change of the pebble's momentum. 9. A net force of 200 N acts on a 100 kg boulder, and a force of the same magnitude acts on a 130-g pebble. The rate of change of the boulder's velocity is equal to the rate of change of the pebble's velocity. 10. The magnitude of momentum of a particle of mass 5 kg moving at a speed of 3 m/sec is 7.5 joules.

          6. A system of particles is known to have a total kinetic energy of zero. This means the total
momentum of the system is also zero.
7. A system of particles is known to have a total momentum of zero. This means the total
kinetic energy of the system is also zero.
8. A net force of 200 N acts on a 100 kg boulder, and a force of the same magnitude acts
on a 130-g pebble. The rate of change of the boulder's momentum is equal to the rate of
change of the pebble's momentum.
9. A net force of 200 N acts on a 100 kg boulder, and a force of the same magnitude acts
on a 130-g pebble. The rate of change of the boulder's velocity is equal to the rate of
change of the pebble's velocity.
10. The magnitude of momentum of a particle of mass 5 kg moving at a speed of 3 m/sec is
7.5 joules.

6. A system of particles is known to have a total kinetic energy of zero. This means the total
momentum of the system is also zero.
7. A system of particles is known to have a total momentum of zero. This means the total
kinetic energy of the system is also zero.
8. A net force of 200 N acts on a 100 kg boulder, and a force of the same magnitude acts
on a 130-g pebble. The rate of change of the boulder's momentum is equal to the rate of
change of the pebble's momentum.
9. A net force of 200 N acts on a 100 kg boulder, and a force of the same magnitude acts
on a 130-g pebble. The rate of change of the boulder's velocity is equal to the rate of
change of the pebble's velocity.
10. The magnitude of momentum of a particle of mass 5 kg moving at a speed of 3 m/sec is
7.5 joules.

Added by Margaret R.

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