Complete the mcq:
1. When scientists are trying to understand a particular set of phenomena, they often make use of, in a scientific sense, a kind of analogy or mental image of the phenomena in terms of something we are familiar with called:
(a) model
(b) theory
(c) law
(d) principle
2. Usually a model is relatively simple and provides a structural similarity to the phenomena being studied, whereas a more broader, more detailed, and can give quantitatively testable predictions, often with great precision is called:
(a) model
(b) theory
(c) law
(d) principle
3. The number of reliably known digits in a number is called:
(a) insignificant figures (b) whole numbers
(c) integers
(d) significant figures
4. The first real international standard established as the standard of length was:
(a) meter (b) foot
(c) centimeter
(d) yard
5. The commonly accepted set of units today is the Systeme International (SI) in which the standard units of length, mass, and timeare:
(a) meter, gram and second
(b) meter, kilogram and minute
(c) meter, kilogram and second
(d) foot, pound, and second
6. Objects that move without rotating are called:
(a) transverse motion
(b) translational motion
(c) kinetic motion
(d) potential motion
7. Displacement is a quantity that has both magnitude an direction called:
(a) axes
(b) frame of reference
(c) vectors
(d) distance
8. The distance traveled along its path divided by the time it takes to travel this distance is:
(a) average speed
(b) displacement
(c) instantaneous velocity
(d) terminal velocity
9. The average velocity over an infinitesimally short time interval is:
(a) average speed
(b) velocity
(c) instantaneous velocity
(d) terminal velocity
10. The change in velocity divided by the time taken to make this change is:
(a) instant acceleration
(b) average acceleration
(c) average speed
(d) velocity
11. When the acceleration is or close enough that we can assume it is constant, we call this:
(a) instant acceleration
(b) uniformly acceleration motion
(c) average acceleration
(d) instantaneous velocity
12. The "father of modem science" is:
(a) Galileo
(b) Newton
(c) Ramazanni
(d) Archimedes
13. At a given location on the Earth and in the absence of air resistance, all objects fall with the same constant acceleration due to:
(a) motion
(b) mass
(c) density
(d) gravity
14. The change in the dependent variable (x) divided by the independent variable (y) in a graphical analysis is called:
(a) height
(b) width
(c) slope
(d) area
15. Any measurement of position, distance, or speed must be made with respect to a:
(a) time
(b) frame of reference
(c) variable
(d) unit
16. The description of how objects move is:
(a) kinematics
(b) translational motion
(c) dynamics
(d) velocity
17. Mechanics that deals with force and why objects move as they do is:
(a) kinematics
(b) translational motion
(c) dynamics
(d) speed
18. The standard unit of time is the:
(a) minute
(b) hour
(c) day
(d) second
19. A certain concise but general statement about how nature behaves is called:
(a) theory
(b) principle
(c) law
(d) model
20. The most basic of the sciences is:
(a) chemistry
(b) geology
(c) biology
(d) physics
21. A quantity such as velocity, which has direction as well as magnitude, is:
(a) vector
(b) scalar
(c) resultant
(d) velocity
22. Many quantities such as mass, time, and temperature, have no direction associated with them. They are specified completely by giving a number and unit called:
(a) vectors
(b) scalars
(c) resultants
(d) speed
23. Motion taking place in two dimensions is:
(a) projectile motion
(b) linear motion
(c) lateral motion
(d) kinetic motion
24. The length of the resultant can be measured with a ruler and compared to scale. Angles can be measured with a protractor. This method is known as the:
(a) sum of squares
(b) tip-to-tail
(c) tail-to-tip
(d) tip-to-tip
25. A vector V that lies in a particular plane can be expressed as the some of two other vectors usually chosen to be along two perpendicular directions is called:
(a) vectors
(b) scalars
(c) resultants
(d) components
26. Any kind of a push or a pull on an object is:
(a) force
(b) vector
(c) scalar
(d) distance
27. Every body continues in its state of rest or of uniform speed in a straight line unless acted upon by a nonzero net force is:
(a) Newton's zeroth Law of Motion
(b) Newton's First Law of Motion
(c) Newton's Second Law of Motion (d) Newton's Third Law of Motion
28. A measure of the inertia ofa body is:
(a) weight
(b) velocity
(c) distance
(d) mass
29. The acceleration of an object is directly proportional to the net force acting on it and is inversely proportional to its mass. The direction of the acceleration is in the direction of the net force acting on it. This is Newton's:
(a) Zeroth Law of Motion
(b) First Law of Motion
(c) Second Law of Motion
(d) Third Law of Motion
30. In SI units, with the mass in kilograms, the unit of force is called the:
(a) Newton
(b) Galileo
(c) Pound
(d) Erg
31 Whenever one object exerts a force on a second object, the second exerts an equal and opposite force on the first. This is Newton's:
(a) Zeroth Law of Motion
(b) First Law of Motion
(c) Second Law of Motion
(d) Third Law of Motion
32. The force of gravity on an object is called its:
(a) mass
(b) weight
(c) volume
(d) area
33. Normal force means:
(a) parallel
(b) tangent
(c) perpendicular
(d) weight
34. The vector sum of all forces acting on an object is:
(a) resultant
(b) total
(c) net
(d) difference
35. When solving problems involving Newton's laws and force, it is very important to draw a diagram showing all the forces acting on each object involved. Such a diagram is called:
(a) free-falling
(b) free-body
( c) free- time
(d) free-space
36. Sliding friction is usually called:
(a) kinetic
(b) static
(c) potential
(d) net
37. A force parallel to two surfaces that can arise even when they are not sliding is:
(a) kinetic
(b) static
( c) potential
(d) net
38. A second way to add two vectors is the:
(a) triangle method
(b) parallelogram method (c) circle method
(d) square method
39. Newton's first law is often called the law of
(a) inertia
(b) force
(c) displacement (d) distance
40. Newton's second law of motion can be written as:
(a) F = rt
(b) F=ma
(c) F = pgh
(d) F=dt