1. The number 175.00 has how many significant figures?

A. 3 B. 4 C. 5 D. 2

2. The “second” is defined as 9,192,631,770 times the period of vibration of radiation from what
atom?
A. Cesium B. Hydrogen C. Helium D. Platinum

3. What is the SI unit of work?

A. Newton B. Watt C. Newton- second D. Joule

4. What is the SI unit of temperature?

A. Fahrenheit B. Kelvin C. Celsius D. Rankine

5. Which one of the following is equivalent to a volt?

A. Watt/ coulomb B. Joule/ coulomb C. Joule/ watt D. Watt/ joule

6. Which one is equivalent to the unit “watt”?

A. Newton- second B. Newton- meter C. Newton- meter per second D. Newton-
meter per second squared

7. “The work done by the net force on a particle equals the change in the particle‟s kinetic
energy”. The statement is known as _____.
A. Law of conservation of energy B. Work- energy theorem C. Law of conservation
of work D. Total work theorem

8. The _____ of a particle equal to the total work that particle can do in the process of being
brought to rest.
A. Kinetic energy B. Potential energy C. Total energy D. Mechanical energy

9. Work is defined as the product of:

A. Force and displacement B. Force and time C. Displacement and time D.
Power and time

10. What is defined as the time rate at which work is done?

A. Impulse B. Momentum C. Power D. Energy

11. What is defined as any influence that can change the velocity of an object?
A. Impulse B. Force C. Energy D. Work

12. What is the measure of inertia of an object?

A. Density B. Weight C. Mass D. Force
13. What is the property of matter which is the reluctance to change its state of rest or of uniform
motions?
A. Impulse B. Momentum C. Inertia D. Equilibrium

14. “If no net force acts on it, an object at rest will remain at rest and an object in motion will
remain in motion as constant velocity”. This statement is the _____.
A. First law of motion B. Second law of motion C. Third law of motion D. D‟
Alembert‟s principle

15. “The net force acting on an object equals the product of the mass and the acceleration of the
object. The direction of the force is the same as that of the acceleration”. This statement is the
_____.
A. First law of motion B. Second law of motion C. Third law of motion D. D‟
Alembert‟s principle

16. “When an object exerts a force on another object, the second object exerts on the first a force
of the same magnitude but in the opposite direction”. This statement is the _____.
A. First law of motion B. Second law of motion C. Third law of motion D. D‟
Alembert‟s principle

17. Which of the following is the Newton‟s first law of motion?

A. Law of impulse and momentum B. Law of acceleration C. Law of inertia D. Law
of reaction

18. What refers to the force with which the earth attracts an object?
A. Gravitational pull B. Mass C. Weight D. Al of the above

19. How many kilograms are there in 1 slug?

A. 11.9 B. 12.5 C. 13.2 D. 14.6

20. What refers to an actual force that arises to oppose relative motion between contacting the
surfaces?
A. Action force B. Reaction force C. Friction D. Drag

21. What refers to the force between two stationary forces in contact that prevents motion
between them?
A. Kinetic friction B. Sliding friction C. Starting friction D. Static friction

22. What is the maximum value of the static friction?

A. Starting friction B. Sliding friction C. Kinetic friction D. Dynamic friction

23. What is TRUE between kinetic friction and static friction?

 A. Kinetic friction is always equal to static friction. B. Kinetic friction is always less than
static friction. C. Kinetic friction is always greater than static friction. D. Kinetic friction is
equal to or greater than static friction.

24. What is another term for kinetic friction?

A. Dynamic friction B. Starting friction C. Sliding friction D. All of the above

25. For the same materials in contact, what is TRUE between coefficient of static friction and
coefficient of kinetic friction?
A. Coefficient of static friction is always less than the coefficient of kinetic friction.
B. Coefficient of static friction is always equal to the coefficient of kinetic friction.
C. Coefficient of static friction is always greater than the coefficient of kinetic friction.
D. Coefficient of static friction is maybe greater than or less than the coefficient of kinetic
friction.

Answer Key:

1. C
2. A
3. D
4. B
5. B
6. C
7. B
8. A
9. A
10. C
11. B
12. C
13. C
14. A
15. B
16. C
17. C
18. C
19. D
20. C
21. D
22. A
23. B
24. C
25. C
Problems

1. A uniform steel beam is 12 feet long is suspended from one end by a construction crane.
Determine the period of oscillation of the beam.
A. 3.13 sec B. 4.13 sec C. 5.13 sec D. 6.13 sec

2. When a ball is suspended from a spring, the spring stretches by 8 cm. What is the frequency of
the ball if it oscillates up and down?
A. 2.8 Hz B. 2.3 Hz C. 1.4 Hz D. 1.7 Hz

3. A 3-lb weight hangs at the end of a spring (k = 30 lb/ft). At what frequency will it vibrate if the
weight is displaced slightly and released?
A. 2.86 Hz B. 2.46 Hz C. 1.46 Hz D. 1.86 Hz

4. For pendulum to have a period of 2 seconds, it must have a length of how many feet?
A. 2.42 ft B. 2.86 ft C. 3.86 ft D. 3.26 ft

5. The Mariana Trench, which is also known as the Philippine Deep measures 10,863 m depth.
What is the pressure at the bottom of the Mariana Trench? Use specific gravity of sea water =
1.03.
A. 1.320 x Pa B. 1.432 x Pa C. 1.098 x Pa D. 1.500 x Pa

6. What is the absolute pressure (in Pascals) if a pressure gauge registers 60 psig in a region where
the barometer is 14.30 psia?
A. 530128 Pa B. 512283 Pa C. 541290 Pa D. 521830 Pa 187

7. An iceberg (sp. gr. = 0.92) floats in seawater (sp. gr. = 1.03). What percentage is the submerged
volume to the total volume of the iceberg?
A. 85% B. 91% C. 87% D. 89%

8. Tiger Woods hit a golf ball at a velocity of 80 m/s. The head of his club was in contact with the
50 g ball for 0.40 ms. What is the average force acting on the golf ball during impact?
A. 25 kN B. 20 kN C. 10 kN D. 15 kN

9. The tennis racket is in contact with a 60-g tennis ball for 0.7 ms and as a result the ball flies off at
a speed of 80 m/s. What is the average force acting on the ball during impact?
A. 6583.29 N B. 6659.30 N C. 6753.21 N D. 6857.14 N

10. A marksman holds a 3.5 kg rifle loosely in his hands and fires a 5.0-g bullet into the air with a
muzzle velocity of 250 m/s. Find the rifle‟s recoil velocity.
A. – 0.277 m/s B. – 0.357 m/s C. – 0.489 m/s D. – 0.521 m/s

11. An astronaut in orbit outside an orbiting space station throws away a 0.3 kg stone at a speed of
8 m/s. How far away from the space station will the astronaut be after 30 minute if his mass is
120 kg (suit included).
 A. 36 m B. 42 m C. 32 m D. 46 m

12. An apple can provide a person about 20000 J of work. To what height can a 50-kg man climb
upstairs if he eats one apple?
A. 36.8 m B. 38.6 m C. 40.8 m D. 42.6 m

13. Using a wheel and axle, a 500 N load can be raised by a force of 60 N applied to the rim of the
wheel. What is the efficiency of the machine if the radii of the wheel and axle are 80 cm and 5
cm, respectively?
A. 50% B. 52% C. 54% D. 56%

14. A rubber ball is dropped to the floor from a height of 3 m. It rebounds to height of 1.8 m. What
is the coefficient of restitution?
A. 0.625 B. 0.825 C. 0.665 D. 0.775

15. A 70 kg man puts a 150 kg of metal block under the pan of his weighing scale. He then stands on
the weighing scale. By how much does this increase of reading of the scale if the distance
between the centers of mass of man and the metal is 0.6 m?
A. 0.000198 g B. 0.000385 g C. 0.000585 g D. 0.000698 g

16. At what height above the surface of the Earth will your weight be half your weight on the
surface of the Earth? Radius of Earth = 3960 miles.
A. 5800 miles B. 5700 miles C. 5600 miles D. 5500 miles

17. An object weighs 150 lbs on the earth‟s surface. At what height about the surface of the earth
would it weigh half of its original weight? Use radius of earth, = 3960 miles.
A. 1340 miles B. 1440 miles C. 1540 miles D. 1640 miles

18. A chef heated a bowl of soup of 30° C to 45° C, what is the change in temperature in the
Fahrenheit scale?
A. 15° C B. 27° C C. 30° C D. 42° C

19. A new temperature scale is being developed in a certain laboratory. On this new scale, the
freezing point of water and the boiling point of water are 150° X and 300° X, respectively. What
is the temperature in the Fahrenheit- scale that is equivalent to 470° X?
A. 200° C B. 206. 7° C C. 213. 3° C D. 219. 8° C

20. What is the new length of the bar made of pure gold at 75° C if it has a length of 0. 3 meters at
10° C?
A. 0. 30273 m B. 0. 3273 m C. 0. 30385 m D. 0. 3385 m

21. A steel tank is filled 15 gallons of gasoline when the temperature is 22° C. The tank and the
gasoline inside are then heated by the Sun‟ s rays to a temperature of 40° C. How much of the
gasoline will spill from the tank? (αsteel= 12 x 10-6 ; βgasoline= 0. 95 x 10-3 )
 A. 0. 1389 gallons B. 0. 1938 gallons C. 0. 2479 gallons D. 0. 2565 gallons

22. What is the increase in temperature necessary for a hydrogen gas, initially at 0° C, to increase its
volume by 5% at constant pressure?
A. 4. 5° C B. 7. 8° C C. 12. 5° C D. 13. 7° C 237

23. On a very hot day in Manila, an oil tanker loaded 50, 000 liters of fuel. It traveled to Baguio,
which was 20 K colder than Manila. How many liters were delivered to Baguio (βgasoline= 0. 95
x 10-3 )
A. 49, 000 liters B. 49, 050 liters C. 50, 950 liters D. 51, 000 liters

24. For breakfast, a 100- kg student ate 2 slices of bacon (35 calories each), scrambled egg (75
calories each) and 2 pieces of bread (70 calories each). Aside from that, he also drank 1 glass of
milk (165 calories). Believing that this is getting him fat, he wishes to do an equivalent amount of
work at school by using the stairs on his way to the classrooms. Assuming that one step of the
stairways is 0. 2 meters, how many steps must he make?
A. 5000 steps B. 6500 steps C. 8000 steps D. 9600 steps

25. How much heat (calories) is requires to raise the the temperature of 5 liters of acetone from 20°
C to 40° C? (Density of acetone is 0. 58 grams per cubic centimeter; specific heat of methyl
alcohol is 2118 J/ kg- deg)
A. 25 kcal B. 29 kcal C. 32 kcal D. 40 kcal