Concepts (20 points total). Choose the BEST answer Multiple Choice (5 points eac

Question

Concepts (20 points total). Choose the BEST answer Multiple Choice (5 points each) 1. If an object is subjected to an unbalanced force, then a) it will accelerate. b) its kinetic energy wi hange. c) its momentum w mange. d) all of the above e) none of the above 2. An object will slide if the friction force is less than the normal force b he friction force is less than the tangential force c) the friction force is greater than the normal force e) e friction force is greater than the tangential force none of the above True or False (2 points/each) 3. F Dynamics is concerned with bodies that have accelerated tion 4. T F Kinetics is a study of the geometry of the motion Kinematics is a study of the forces that cause the motion. 6 Rectilinear kinematics refers to straight-line motion. 7. T F Mass is a property of mat provides a quantitative measure of its resistance change in velocity.

Explanation / Answer

1) All of the above.

Unbalanced forces changes the velocity, change in velocity is acceleration, Momentum changes and Kinetic energy changes as all these depend on velocity.

2) Friction force is less than tangential force.

If the tangential force applied is less, it cannot overcome friction.

3) True. Dynamics deals with bodies in motion

4) False. Kinetics is the study of forces that causes motion.

5) False. Kinematics is the motion of points, bodies without considering the mass of each or the forces that caused the motion.

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