oint Any answers NOT recorded on the Scantron answer page will NOT be counted N

Question

oint Any answers NOT recorded on the Scantron answer page will NOT be counted N 1. Potential energy is the energy of position. ATrueB) False 2. According to the work-energy theorem, the work done by friction on an object is always positive work A)True B) False 3. When only the force of gravity does work, the total mechanical energy is conserved. A) True B) False 4. The maagnitude of the work done by a force can be expressed as W= 4/E True B) False 5. If the vector sum of the external forces on a system is zero, the total moment um of the system is constant. True B) False 6. Centripetal and Tangential accelerations are the same thing. A) True (B False 7. If the total momentum of a system is conserved in a collision, but the total kinetic energy is not, then the collision is elastic. A) True B) False 8. If the rotational kinetic energy of a rigid body doubles, the angular velocity will increase by a factor of 1.4 A) True B) False

Explanation / Answer

1) True

2) False(because work done by friction on an object is always negative.)

3)True

4)False

5)True

6)False

7) false

8)True

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