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)