M602 Review Questions

Unit 1

1. What do we call the time rate at which velocity changes?

Acceleration.

2. What do we call the line, real or imaginary, that passes through the center of an object about which it could rotate? It is also called a point of reference.

Axis.

3. What do we call a point around which an object rotates?

An axis of rotation.

4. What do we call the amount of mass contained in a particular volume?

Density.

5. What do we call the ability to do work?

Energy.

6. What do we call any action which tends to produce, retard, or modify motion; or change the shape of an object?

Force.

7. What do we call the action of one body or substance rubbing against another; the resistance to motion of surfaces touching each other.

Friction.

8. What do we call the standard measurement of work used in the United States?

Foot-pounds.

9. What do we call the force required to raise 33,000 pounds one foot in one minute, or 33,000 ft/lbs per minute. It is used to measure the power of motors and engines.

Horsepower.

10. What do we call the opposition of a body to having its state of rest or motion changed by an outside force; the tendency of a body at rest to remain at rest and a body in motion to remain in motion, unless acted upon by an outside force?

Inertia.

11. What do we call the temperature scale using absolute zero as the zero point and divisions that are the same size increments as Celsius degrees?

Kelvin scale.

12. What do we call the energy possessed by an object because of its motion?

Kinetic energy.

13. What do we call the quantity of matter in a body as measured by its resistance to change in inertia?

Mass.

14. What do we call anything that occupies space and has weight?

Matter.

15. What do we call the branch of physics which deals primarily with the ideas of force, mass, and motion and is usually considered the fundamental branch of physics?

Mechanics.

16. What do we call the tendency of an object to maintain its given speed and direction or maintain its velocity? It may be computed by multiplying the mass of the object times its velocity.

Momentum.

17. What do we call the tendency of an object to change position over time?

Motion.

18. What explains inertia or the tendency of a moving object to resist change in its state of motion?

Newton’s First Law of Motion.

19. What states that a change in motion is proportionate to the force applied?

Newton’s Second Law of Motion.

20. What states that whenever there is a force pushing in one direction, there is another force pushing back?

Newton’s Third Law of Motion.

21. What do we call the energy of an object before it is set into motion or released; stored energy?

Potential energy.

22. What do we call the rate of doing work measured in foot- pounds per second, joules, or watts? When larger measures are required, the kilowatt and horsepower are used.

Power.

23. What do we call the amount of force exerted over a given area measured in pounds per square meters or pounds per square inch?

Pressure

24. What do we call the greatly reduced friction created when an object moves over wheels, rollers, or balls?

Rolling friction.

25. What do we call the tendency of an object to turn around a center point or axis of rotation?

Rotation.

26. What do we call the rate of motion of an object over time without regard to its direction?

Speed.

27. What do we call a force which tends to produce a twisting or rotating motion around a center point or axis of rotation?

Torque.

28. What do we call the speed of an object moving in a particular direction?

Velocity.

29. What do we call the amount of matter contained in a particular area often used to denote the amount of gas or liquid in a container?

Volume.

30. What do we call the gravitational attraction the earth has on an object?

Weight.

31 What do we call the product of the force exerted on an object and the distance it is moved?

Work.

32. What do we call the pull on all bodies in the earth’s sphere toward the earth’s surface?

Gravity.