Weekly Test in Physics (August 8, 2013)

I.                    Identification. Identify the following

1.       The rate at which an object moves.

2.       A vector quantity equal to the displacement divided by the elapsed time.

3.       The rate at which an object moves in a given direction.

4.       A scalar quantity equal to the total distance traveled in a given unit time.

5.       The rate of motion of an object when it is in uniform motion

6.       The speed measured at a particular time or instant.

7.       A device used to measure the speed at a particular time.

8.       A motion where in the speed is not changing.

II.                  Problem Solving.

1.       A car travels up a hill at a constant speed of 37 km/h and returns down the hill at a constant speed of 66 km/h. Calculate the average speed for the whole trip.

2.       Emily takes a trip, driving with a constant velocity of 90 km/h to the north except for 30 min rest stop. If Emily’s average velocity is 75 km/h to the north, how long does the trip take?

Weekly Test in Physics (August 2, 2013)

I.                    Identification. Identify the following.

1.       It is a subbranch of classical physics that focuses on forces acting on bodies whether at rest or in motion.

2.       Object or background used for comparing different positions of an object.

3.       Refers to the movement of an object.

4.       Motion of an object travelling in a curved path.

5.       Continuous change of position with respect to a certain reference point.

6.       It is the symbol for distance

7.       It is exhibited by a change in position.

8.       Motion of an object travelling in a straight path.

9.       The total length of a path travelled or covered by an object.

10.   Motion of an object travelling in a straight path.

11.   It focuses on the way in which forces combine with each other so as to produce equilibrium.

12.   Straight line distance between the starting and end points.

13.   It focuses on the way in which force produces motion.

14.   It focuses on the motion of a body without regard to the cause of that motion.

15.   It is the symbol of displacement.

II.                  Classification. Classify the following if it is under Kinematics, Dynamics and Statics.

1.       hanging picture frame

2.       pushing a big box

3.       fast motion of a car

4.       pulling a toy car

5.       stationary cabinet

6.       the distance travelled by a boy

7.       change of direction of a typhoon

8.       chair at rest

9.       slowing down vehicle

10.   lifting a bag

III.                Problem Solving. Solve for the distance and displacement in the following problem. Show your complete solution.

1.       A boy walks 7 km West then 4 km North and finally 4 km East. How far is he from his starting position? What is the total distance of the boy?

2.       To get from one office to another in Makati, one travels as follows (with all angles measured clockwise from the West): 2 m at 180⁰, 0.5 m at 150⁰ and 1.0 m at 30⁰. Find the total distance and the displacement.

Weekly Test in Physics (July 26, 2013)

I.                    Problem Solving. Solve the following problem using the component method. Show your complete solution.

1.       The following are the displacements of a farmer who is plowing his land: 4.85 m North, 5.35 m 32⁰ North of East, 5.62 m North, 3.46 m 40⁰ North of East, 6.0 m 64⁰ South of East and 4.70 m South. Find his resultant displacement.

Weekly Test in Physics (July 19, 2013)

I.                    Identification. Identify the following.

1.       A triangle with an interior right angle.

2.       Branch of mathematics that deals with the relationships of the sides and angles of a triangle.

3.       It states that the square of the hypotenuse is equal to the sum of the squares of the two legs of a right triangle.

4.       Process of finding the magnitudes of the components of a vector.

5.       Components along the horizontal and vertical axes.

II.                  Definition. Define the following mathematically.

1.       Pythagorean theorem

2.       Cosine function

3.       Sine function

4.       Tangent function

5.       Angle of direction derived from tangent function

III.                Vector Addition Using Pythagorean Theorem.

1.       A chicken roams around a farm to look for food from his origin is 6.34 m due North stops for a while and continues 3.89 m in the same direction. Finally, it turns 5.30 m going to the East.

2.       Toto runs 3 m to East before he releases his paper made plane. The plane flies 11.81 m/s in the same direction as Toto when he ran. When the wind blows, the direction of the plane changes going to the North for 5.2 m/s.

3.       The following are the applied forces of a student to a book: 15 N to the right and 8 N away from him.

IV.                Find the components of the following.

1.       A slide in a park is 630 cm long. It creates an angle with horizontal of 33⁰. Find the components in meters.

2.       A ship sails 2036.04 km, 24.5⁰ North of East.

3.       Lannie and Lettie is pulling a cabinet using two ropes at right angle to each other. Their resultant force is 144.22 N which is 33.69⁰ with the x-axis.

Weekly Test in Physics (July 12, 2013)

I.                    Identification. Identify the following.

1.       It refers to measurement or size

2.       It is a quantity described with magnitude and direction.

3.       A quantity described by magnitude only.

4.       A process of combining or adding two or more vectors to produce a single vector.

5.       It pertains to the combined or added vectors.

6.       It represents the starting position or origin of the vector.

7.       It indicates the direction of the vector.

8.       It tells us about the magnitude of the vector.

9.       Principle of adding vectors of the same direction.

10.   Principle of adding vectors of opposite direction.

II.                  Classification. Draw line  for scalar quantity and arrow for vector quantity.

1.       Density

2.       Weight

3.       Mass

4.       Time

5.       Speed

6.       Displacement

7.       Momentum

8.       Distance

9.       Temperature

10.   Velocity

III.                Enumeration

1-3. Graphical method of adding vectors

4-5. Analytical method of adding vectors

6-8. Compass Directions

9-10. Relative Directions

IV.                Vector Representation. Draw the following vectors in one Cartesian plane using the given scale.

1.       The car moves 20 m/s going East (0.5 cm=2 m/s)

2.       A man walks 65 m to the left (0.5 cm=15 m)

3.       A vehicle accelerated 108 m/s² 25⁰ North of West (0.5 cm=9 m/s²)

4.       A man pushes a cabinet 130 N 70⁰ South of East (0.5 cm=13 N)

5.       A wrestler has a weight of 960 N (0.5 cm=60 N)

V.                  Vector Addition. Add the following vectors graphically using the given scale

1.       Tommy pulls his toy car 60 N to the left and pauses to fix it he then continues pulling it 75 N in the same direction. Find the resultant force of Tommy. (0.5 cm=7.5 N)

2.       Mang Tomas rides a bicycle to buy a bottle of ketchup. He travels 250 m from his house to the store. After buying his product, he rides again from the store back to his house. The store is in the North and Mang Tomas’ house is in the South. Find his final displacement. (0.5 cm=25 m)

3.       Tom is selling merienda around the town. He starts from the plaza to the jeepney terminal 320 m due South. He continues 0.450 km turning to East in front of LSIM. What is his resultant displacement? (0.5 cm= 90 m)

Weekly Test in Physics (July 5, 2013)

I.                    Describe the following in terms of its function

1.       Altimeter

2.       Fathometer

3.       Pedometer

4.       Telemeter

5.       Wire gauge

6.       Radar

II.                  Problem Solving. Show your complete solution.

1.       A perfume sample in a small cylindrical bottle which is 0.8 cm in diameter is distributed for free. How tall is the bottle if it contains 2 mL of the perfume.

2.       Five boxes (each measuring 10 cm x 2 cm x 2 cm) were made from a 0.22 m long cardboard. How wide is this cardboard?

3.       An aquarium is 35 cm long and is filled with water to a depth of 0.18 m. Determine its width if it can hold 12 L of water.

Weekly Test in Physics (June 28, 2013)

I.                    Identification. Write the word or phrase that is described or defined in the following.

1.      Process of changing one unit to another unit.

2.      Process of converting into metric system.

3.      The primary reason why the metric system is easier to use.

4.      The official name of the metric system.

5.      Equivalence statement that is expressed in in ratio and is equal to one.

6.      Method of determining the quantity, capacity and dimension.

7.      The other name of the English System of measurement.

8.      Where did the metric system originate?

9.      When did the metric system originate?

10.  A conventional way of expressing very large and very small numbers.

II.                  Name the following symbols of prefixes and their equivalent multipliers.

1.      P

2.      p

3.      d

4.      Y

5.      n

6.      k

7.      E

8.      M

9.      z

10.  m

11.  h

12.  Z

13.  da

14.  µ

15.  f

16.  y

17.  T

18.  G

19.  a

20.  c

III.                Give at least two units for the following derived quantities

1.      Area

2.      Volume

3.      Force or Weight

4.      Energy

5.      Pressure

IV.                Enumeration.

1-14. Enumerate the seven fundamental quantities and their corresponding base units.

V.                  Problem Solving. Solve the following conversion problems. Write the complete solution.

1.      The Concorde is a type of aeroplane that flies very fast. The top speed of Concorde is 844 km/hr. Convert its top speed to m/s.

2.      The greatest tide change on earth occurs in the Bay of Fundy. The difference between low tide and high tide can be as great as 16.6 m. How high is the tide change in feet and in kilometers? (1 km=3280.84 ft)

3.      The average ice berg weighs 20,000,000 tons. What is the mass of the ice berg in kilograms and in pounds? (1 ton=907.18 kg) (I lb=453.59 g)

4.      Hawaii moving toward Japan 10 cm every year. How many inches is 10 cm? (1 m = 39.37 in)

5.      The average human produces saliva about 10,000 gallons in a lifetime. What is its value in liters and cubic meters? (1 gal = 3.785 L) (1000 L = 1 m³)

6.      The following are the brands of bottled orange juice: Brand 1 (400 mL for ₱22.00), Brand 2 (450 cm³ for ₱20.00) and Brand 3 (0.12 gal for ₱23.00). Which among the three products is the most practical to buy?

Weekly Test in Physics (June 21, 2013)

I.                    Identification. Write the word or phrase that is described or defined in the following.

1.      A systematic method used in scientific investigations.

2.      The study of matter and energy and their relationship.

3.      Systematized body of knowledge.

4.      Application of science through tools, products and processes.

5.      It is an intelligent guess.

6.      General statement or a set of statements that explains why a phenomenon occurs.

7.      It is the origin of the word science meaning “to know”.

8.      It is the origin of the word physics meaning “natural”

9.      Term used for a discovery by accident.

10.   A place where experiments or scientific investigations are done.

II.                  Classification. Write NS for Applied Science, AS for Social Science and SS for Natural Science.

1.      Physics

2.      Anthropology

3.      Medicine

4.      Botany

5.      Pharmacy

6.      Economics

7.      Psychology

8.      Engineering

9.      Chemistry

10.  Linguistics

III.                Multiple Choice. Write the letter of the correct answer and the corresponding word or phrase.

1.      Science that deals with matter.

a.      Botany

b.      Matterology

c.       Physics

d.      Chemistry

2.       Science that deals with mental processes.

a.      Criminology

b.      Anthropology

c.       Psychology

d.      Sociology

3.      Science that deals with crime and criminal laws.

a.      Political Science

b.      Criminology

c.       Economics

d.      Law

4.      Science that deals with government and politics.

a.      Political Science

b.      Criminology

c.       Economics

d.      Law

5.      Science that focuses animals.

a.      Animology

b.      Biology

c.       Botany

d.      Zoology

6.      Science that deals language.

a.      Grammar

b.      Linguistics

c.       Syntax

d.      Semantics

7.      Science that deals with the production, distribution and consumption of products and services.

a.      Entrepreneurship

b.      Finance

c.       Economics

d.      Business Administration

8.      Science that deals with drugs.

a.      Pharmacology

b.      Pharmacy

c.       Nursing

d.      Nutrition

9.      Science that deals with past events.

a.      History

b.      Literature

c.       Biography

d.      Archaeology

10.  Science that deals with historic and prehistoric people.

a.      Demography

b.      Archaeology

c.       History

d.      Geography

IV.                Enumeration. Enumerate the following.

1-2. Two branches of Natural Science

3-4. Main constituents of the universe

5-9. Steps of scientific method in logical order

10-12. Classical Physics

13-15. Modern Physics