Section. ART ONE: OBJECTIVE TYPE QUESTIONS. COMPLETE OR SELECT THE BEST ANSWER.

Question

Section. ART ONE: OBJECTIVE TYPE QUESTIONS. COMPLETE OR SELECT THE BEST ANSWER. The motion of a rigid body has six degrees of freedom: 3- -- and 3- Two conditions for equilibrium of a rigid body areand . The rotational analogue of force is , m measured in newton-meters ased on a "before-and-after" approach . The use of. 5. To be able to do work, a device or a person must have 6. As a skier gains speed while gliding down a slope, into _energy is being converted energy 7. Identical cars A and B are traveling down a highway with A going two times as fast as 8. The kinetic energy of A is (a) 2 times as large as the kinetic energy of B; (b) 4 times as large as the kinetic energy of B; (c) one-half as large as the kinetic energy of B; (d) the same as that of B because they have the same mass 8, How long is a 10-foot shark? what is the weight of a 750-kg camel? 9. The linear momentum of a truck will always be greater than that of a bus if (a) the truck's mass is larger than the bus's but its speed is the same; (b) the truck's speed is larger than the bus's but its mass is the same; (c) both its mass and its speed are larger than the bus's; (d) any of the above. 10. In its original version Newton's Second Law of Motion equates the net external force acting on an object to (a) the change of its linear momentum; (b) the rate of change of its linear momentum; (c) the impulse; (d) the change of its angular momentum. PART TWO: GIVE STEP-BY-STEP SOLUTIONS TO THE FOLLOWING PROBLEMS. MIND THE UNITS In all problems use g 10 m/s2. (DO NOT SUBMIT ROUGH WORK.) 1. A soccer player runs up behind a 0.500-kg soccer ball traveling at 3.00 m/s and kicks it in the same direction as it is moving, increasing its speed to 13.0 m/s (a) Define the physical quantities: momentum and impulse.

Explanation / Answer

1) 3 translation and 3 rotational  

2) net forc = 0 and Net torque = 0

3) Torque

4) 3rd law of Motion

5) Energy

6) Potentential , Kinetic

7) b

8) 10 foot and 750 Kg

9) d

10) b

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