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WorksheetsPhysics
Total questions: 93
Worksheet time: 47mins
Name
Class
Date
1.
67. The smallest part of an element is:
a)
a) A compound
b)
b) An atom
c)
c) A molecule
2.
68. What do you get when you add 2H2 and O2?
a)
a) 2H2O
b)
b) 2HO2
c)
c) 2H2O2
3.
69. A positive ion:
a)
a) Has extra electrons
b)
b) Has number of protons difference with number of neutrons
c)
c) Has missing electrons
4.
70. The nucleus of an atom contains:
a)
a) Protons and electrons
b)
b) Protons and neutrons
c)
c) Electrons and neutrons
5.
71. The atomic mass number is the number of.
a)
a) Protons plus electrons
b)
b) Neutrons plus electrons
c)
c) Protons plus neutrons
6.
72. Which physical states may matter exist in?
a)
a) Solid, liquid
b)
b) Liquid, gas
c)
c) Solid, liquid and gas
7.
73. Which statement is the best correct?
a)
a) Each vector consists of Direction
b)
b) Each vector consists of Intensity
c)
c) Each vector consists of Direction and intensity
8.
74. In physics, which below scalars have no direction?
a)
a) Mass, time, force
b)
b) Mass, temperature, force
c)
c) Mass, time and temperature
9.
75. Two forces work on an object on the same time, when the result should be calculated, you need:
a)
a) Angle of vector only
b)
b) Length of vector only
c)
c) Angle and length of vector
10.
76. The center of gravity is depend on:
a)
a) The form of a body
b)
b) The mass of a body
c)
c) The density of a body
11.
77. Stress is show as:
a)
a) Ratio of body Weight to Area of applied Force
b)
b) Ratio of External Force to Area of applied Force
c)
c) Ratio of External Force to Area of body Surface
12.
78. When a hammer has contacted Area 0.01m² applying a Force 10 Newton applying to a table, how many Stress acts on the table?
a)
a) 100 Pa
b)
b) 1000 daN
c)
c) 1000 Pa
13.
79. Basic structural stresses to aircraft are:
a)
a) Tension, compression, torsion
b)
b) Shear, bending, tension
c)
c) Tension, compression, torsion, shear and bending
14.
80. Which statement is the best correct?
a)
a) Unit for tensile stress is Lb/in²
b)
b) Unit for tensile stress is N/m
c)
c) Units for tensile stress are: Lb/in² or N/m²
15.
81. Calculate compression stress on cross section Area 0.5m² with Force perpendicular to area 150N.
a)
a) 75N/m²
b)
b) 300N/m²
c)
c) 300N.m
16.
82. Which is the Force required on wrench handle with length 10 in to produce a torque of 300 in.lbf?
a)
a) 30 lbf
b)
b) 3000 lbf
c)
c) 300 lb
17.
83. Which is the Force required on torque wrench handle with length 15 in and extension with length 5 in to produce a torque of 300 in.lbf?
a)
a) 25 lbf
b)
b) 20 lbf
c)
c) 15 lb
18.
84. All matters exists in which states?
a)
a) Solid, Liquid or Gas
b)
b) Liquid or Gas
c)
c) Solid, Liquid or Lava
19.
85. When 5 MPa (725 psi) of fluid pressure is supplied to a cylinder with a piston area of 10 cm2, how many Force is generated?
a)
a) 7250 N
b)
b) 5000 N
c)
c) 2000 N
20.
86. Formula of Pascal's law is:
a)
a) The amount of force (F) produced by a hydraulic piston by multiplying the area (A) of the piston by the pressure (p) exerted by the fluid
b)
b) The amount of force (F) produced by a hydraulic piston by multiplying the length (L) of the piston by the pressure (p) exerted by the fluid
c)
c) The amount of force (F) produced by a hydraulic piston by multiplying the area (A) of the piston by the fluid density (D)
21.
87. A cylinder has a piston surface area 4 in² on the side without rod. When 1,000 psi of pressure is applied. How many force is produced?
a)
a) 4000 lbs
b)
b) 400 lbs
c)
c) 4000 N
22.
88. A cylinder has a piston surface area 4 in² on the side with rod, rod area 1 in².When 1,000 psi of pressure is applied. How many force is produced?
a)
a) 4000 lbs
b)
b) 3000 lbs
c)
c) 3000 N
23.
89. A block of wood of volume 2 ft³ in ocean water, density of ocean water is 64.4 lb/ft³. Find the Buoyancy Force acts on this block.
a)
a) 32.2 lb.ft
b)
b) 32.2 lb
c)
c) 128.8 lb
24.
90. A block of oak (Density = 45 lb/ft³) is placed in a tank of benzene (Density =54.9 lb/ft³). Which below statement is true?
a)
a) The block of oak total sink in tank of benzene
b)
b) The block of oak total float over tank of benzene
c)
c) The oak block will be below the surface of the benzene nearly 82%
25.
91. An aircraft flies 1350 nmiles in 2h 15mins. What is the average speed?
a)
a) 600 nmiles/hour
b)
b) 400 nmiles/hour
c)
c) 150 nmiles/hour
26.
92. An aircraft travels at 500 km/hr for 30 minutes at steady speed. How far does it move in that time?
a)
a) 500 km
b)
b) 1000 km
c)
c) 250 km
27.
93. An object travels 18 km in 1 minute 30 seconds. What is its average speed?
a)
a) 270 m/s
b)
b) 200 m/s
c)
c) 250 m/s
28.
94. What is acceleration?
a)
a) Rate of change of velocity
b)
b) Rate of change of movement
c)
c) Rate of change of position
29.
95. A car travelling at a speed of 5 m/s accelerates at the rate of 1 m/s². How long will it take to reach a speed of 20 m/s?
a)
a) 15 secs
b)
b) 10 secs
c)
c) 20 secs
30.
96. How long will it take a car moving at 60 km/hr to travel 90 km?
a)
a) 40 minutes
b)
b) 75 minutes
c)
c) 90 minutes
31.
97. A cyclist goes from rest to 50 m/s in 5 seconds. What is the average acceleration?
a)
a) 10 m/s²
b)
b) 12 m/s²
c)
c) 14 m/s²
32.
98. A body travelling at 20 m/s accelerates to 36 m/s in 8 seconds, what is its acceleration?
a)
a) 8 m/s²
b)
b) 4 m/s²
c)
c) 2 m/s2
33.
99. For the acceleration caused by the earth’s gravity, standard gravity is defined as follows:
a)
a) G = 9,01 m/s²
b)
b) G = 9,81 m/s²
c)
c) G = 8,91 m/s²
34.
100. A ball is dropped from rest. What is its speed after 4 seconds?
a)
a) Approximate 80 m/s
b)
b) Approximate 40 m/s
c)
c) Approximate 60 m/s
35.
101. A body started from rest and has been falling freely for 3 seconds. At what speed is it falling?
a)
a) Approximate v = 19 m/s
b)
b) Approximate v = 29 m/s
c)
c) Approximate v = 39 m/s
36.
102. Which statement is the best correct?
a)
a) When things fall to earth, terminal velocity of things depend on: Mass, drag and height of things
b)
b) When things fall to earth, terminal velocity of things depend on: Mass and height of things
c)
c) When things fall to earth, terminal velocity of things depend on:Mass and drag of things
37.
103. The centrifugal force is caused by:
a)
a) The inertia of a rotating body
b)
b) The inertia of a straight line moving body
c)
c) The inertia of a linear moving body
38.
104. For circular motion, centripetal force can be calculated by:
a)
a) (Mass x Velocity)/Radius
b)
b) (Mass x Velocity²)/Radius
c)
c) (Mass x Velocity²)/Diameter
39.
105. For circular motion, with tangential velocity = 10m/s, mass = 5kg, radius = 0.1m, the centrifugal force is:
a)
a) 5N
b)
b) 15N
c)
c) 0.5N
40.
106. Which statement is the best correct?
a)
a) When things fall to earth, terminal velocity of things depend on: Mass, drag and height of things
b)
b) When things fall to earth, terminal velocity of things depend on: Mass and height of things
c)
c) When things fall to earth, terminal velocity of things depend on:Mass and drag of things
41.
108. aircraft structure?
a)
a) Vibration frequencies
b)
b) resonant frequencies
c)
c) Harmonic frequencies
42.
109. What are purposes of gear in clocks and watches, in automobiles and aircraft?
a)
a) Used to gain mechanical advantage
b)
b) Used to change the direction of movement
c)
c) Used to gain mechanical advantage, or to change the direction of movement.
43.
110. The actual mechanical advantage (AMA) is:
a)
a) The ratio of the output force to the input force
b)
b) The ratio of the input force to the output force
c)
c) The subtraction of the output force to the input force
44.
111. A worker is able to raise a body weighing 150 N by applying a force of 75 N. What is the AMA of the machine that he is using?
a)
a) 3
b)
b) 2
c)
c) 4
45.
112. A worker is able to raise a body by applying a force of 50N, using the machine using has AMA (actual mechanical advantage) is 3. How much does the body weigh?
a)
a) 150
b)
b) 120
c)
c) 200
46.
113. Ideal Mechanical Advantage (IMA) is defined as:
a)
a) Ratio of the output distance to the input distance
b)
b) Ratio of the input distance to the output distance
c)
c) Ratio of the input distance to (the total of output distance and input distance)
47.
117. A worker applied his force through a distance of 15m. The load is raised a distance of 5 m. What is the Ideal Mechanical Advantage (IMA) of the machine that he used?
a)
a) 4
b)
b) 5
c)
c) 3
48.
118. A worker applied his force through a distance of 30 m. the Ideal Mechanical Advantage (IMA) of the machine that he used is 3. How distance is the load raised?
a)
a) 8
b)
b) 6
c)
c) 10
49.
119. The mass of an object is described as:
a)
a) The amount of matter in an object
b)
b) Is constant regardless of its location
c)
c) The amount of matter in an object and is constant regardless of its location
50.
120. Acceleration of Gravity on earth is:
a)
a) 9.8 m/s²
b)
b) 32.2 ft/s²
c)
c) 9.8 m/s2 or 32.2 ft/s²
51.
121. 1 US pounds equal:
a)
a) 0.4536 kg
b)
b) 0.4536 g
c)
c) 4.536 kg
52.
122. 5 US pounds equal:
a)
a) 2.268 kg
b)
b) 2.505 kg
c)
c) 2.785kg
53.
123. Formula of Force is:
a)
a) Force = Mass x Speed
b)
b) Force = Mass x Acceleration
c)
c) Force = Mass x Gravity
54.
124. Which below statement is correct?
a)
a) The jet has a greater mass, it has a greater resistance to change its state of rest to motion.
b)
b) The jet has a greater mass, it has the same resistance to change its state of rest to motion.
c)
c) The jet has a greater mass, it has a less resistance to change its state of rest to motion.
55.
125. Weight is defined as:
a)
a) The gravitational push of the earth on a given body
b)
b) The gravitational pull of the earth on a given body
c)
c) The gravitational pull of the earth on a given surface
56.
126. Formula of Weight is:
a)
a) Weight = Mass x Gravity
b)
b) Weight = Mass x Height
c)
c) Weight = Density x Gravity
57.
127. A body has a mass of 50 kg, how weight is it? Gravity is 9.81
a)
a) 490.5 N.m
b)
b) 490.5 N
c)
c) 490.5 Lbs
58.
128. A box has a mass of 250 kg, how weight is it? Gravity is 9.81
a)
a) 2,452.5 N
b)
b) 2,400 N
c)
c) 3,400 N
59.
129. A force 15 daN equals:
a)
a) 1500 N
b)
b) 150N
c)
c) 1,5N
60.
130. How many kinds of friction?
a)
a) There are 3 kinds: starting friction, sliding friction and rolling resistance
b)
b) There are 2 kinds: starting friction and rolling resistance
c)
c) There are 3 kinds: starting friction, linear friction and rolling resistance
61.
131. The friction formula is:
a)
a) Friction = (Coefficient of Friction) x Mass
b)
b) Friction = (Coefficient of Friction) x Weight
c)
c) Friction = (Coefficient of Friction) x Acceleration
62.
132. A steel body weighing 450 N is resting on a horizontal steel surface. How many newtons of force are necessary to start the body sliding? Know that the Coefficient of starting friction is 0.15
a)
a) 60 N
b)
b) 86 N
c)
c) 68N
63.
133. A steel body weighing 450 N is resting on a horizontal steel surface. What force is necessary to keep this body sliding at constant speed? Know that the Coefficient of sliding friction is 0.09
a)
a) 41 N
b)
b) 45 N
c)
c) 55 N
64.
134. What is the formula of work?
a)
a) Work = Force x Velocity
b)
b) Work = Force x Acceleration
c)
c) Work = Force x Distance
65.
135. Unit of Work is Joules, 1 Joule is equal:
a)
a) Kg.m
b)
b) Kg.m/s
c)
c) N.m
66.
136. What is the Unit of Work?
a)
a) Joule (J)
b)
b) Watt (W)
c)
c) Newton (N)
67.
137. Calculate the work done by a man of mass 30 kg in climbing a ladder 2 m high (acceleration of gravity is 9.81 m/s²)
a)
a) 588.6 Joules
b)
b) 588.6 Newtons
c)
c) 588.6 Watts
68.
138. Calculate the work done by a man of mass 65 kg in climbing a ladder 4 m high (acceleration of gravity is 9.81 m/s²)
a)
a) 3,548 Joules
b)
b) 2,550.6 Joules
c)
c) 2,348 Joules
69.
139. An object with a force of 600 Newton is moved a distance of 30 meters. How many is the work?
a)
a) 18.000 Joules
b)
b) 1.800 Joules
c)
c) 2.000 Joules
70.
140. What is the Unit of Power?
a)
a) Joule (J)
b)
b) Watt (W)
c)
c) Newton (N)
71.
141. 10 Watts is equal:
a)
a) 10 J/s
b)
b) 10 N/s
c)
c) 10 kg/s
72.
142. How many Power for the object with a force of 600 Newton is moved a distance of 30 meters in 10 seconds?
a)
a) 180 W
b)
b) 18,000 W
c)
c) 1,800 W
73.
143. What is the formula of power?
a)
a) Power = Work/Time
b)
b) Power = Work/Distance
c)
c) Power = Work/Gravity
74.
144. Newton's First Law is:
a)
a) A body at rest remains at rest and a body in motion continues to move at a constant velocity unless acted upon by an unbalanced external force
b)
b) A body at rest remains at rest and a body in motion continues to move at a constant velocity unless acted upon by an balanced external force
c)
c) A body at rest remains at rest and a body in motion continues to move at a constant velocity without external force
75.
145. Newton’s Second Law is:
a)
a) The rate of change of momentum of a body is proportional to the applied force and takes place in the direction in which the force acts
b)
b) The rate of change of momentum of a body is inversely proportional to the applied force and takes place in the direction in which the force acts
c)
c) The rate of change of momentum of a body is not related to the applied force and takes place in the direction in which the force acts
76.
146. Formula of Newton’s Second Law is:
a)
a) Force = Weight . Acceleration - F = W.a
b)
b) Force = Mass . Acceleration - F = m.a
c)
c) Force = Mass . Velocity - F = m.v
77.
150. A body has mass 50 kg, how many Force needs for moving it with acceleration 5 m/s²? Assume that friction is Zero and gravity is 9.81 m/s²
a)
a) F = 2,052.5 N
b)
b) F = 2,252.5 N
c)
c) F = 2,452.5 N
78.
151. Newton’s Third Law is:
a)
a) Every action has an equal and opposite reaction
b)
b) Every action has an opposite reaction and can not determine
c)
c) Every action has an opposite reaction and equal 2 times of this reaction
79.
152. Energy is defined as:
a)
a) The “Capacity to Accelerate”
b)
b) The “Capacity to do Work”
c)
c) The “Capacity to Decelerate”
80.
153. Formula for Kinetic Energy (Ek) is:
a)
a) Ek = 1/2 (Mass . Velocity²)
b)
b) Ek = 1/2 (Mass . Acceleration²)
c)
c) Ek = 1/2 (Mass . Force²)
81.
154. Calculate Kinetic Energy of matter has Mass = 5kg and Velocity = 2m/s
a)
a) Ek = 30 (J)
b)
b) Ek = 20 (J)
c)
c) Ek = 10 (J)
82.
155. A body of mass 10 kg falls to the earth from a height of 300m above the surface of the earth. How many Potential Energy of this body? Gravity is 9.81 m/s²
a)
a) 26,430 (J)
b)
b) 20,430 (J)
c)
c) 29,430 (J)
83.
156. Thermodynamic Temperature Unit is:
a)
a) Kelvin
b)
b) Joule
c)
c) Joule/second
84.
157. What is the efficiency of energy conversion?
a)
a) The ratio between the output into a mechanism and the useful input of the mechanism
b)
b) The ratio between the input into a mechanism and the useful output of the mechanism
c)
c) The different between the input into a mechanism and the useful output of the mechanism
85.
158. The formula for efficiency is as follows:
a)
a) Ŋ = Pout/Pin
b)
b) Ŋ = Fout/Fin
c)
c) Ŋ = Tout/Tin
86.
159. A machine has Power output = 100 Watts, The Efficiency is 80%. How many Power is lost?
a)
a) Ploss = 15 W
b)
b) Ploss = 35 W
c)
c) Ploss = 25 W
87.
160. Gyroscopic are used to detect:
a)
a) Turns around the x, y or z axis of an aircraft
b)
b) Turns around the only z axis of an aircraft
c)
c) Turns around the x or z axis of an aircraft
88.
161. What is definition of Momentum?
a)
a) A vector quantity defined as the product of mass times velocity
b)
b) A quantity defined as the product of mass times velocity
c)
c) A vector quantity defined as the product of mass times acceleration
89.
162. What is formula of Momentum?
a)
a) Momentum = m . a
b)
b) Momentum = m . V
c)
c) Momentum = m . F
90.
163. A matter has mass 500 kg and velocity 5 m/s. How many Momentum Quantity
a)
a) Momentum = 2500 kg.m/s
b)
b) Momentum = 2000 kg.m/s
c)
c) Momentum = 1000 kg.m/s
91.
164. A matter has mass 200 kg and velocity 5 m/s. How many Momentum Quantity
a)
a) Momentum = 40 kg.m/s
b)
b) Momentum = 200 kg.m/s
c)
c) Momentum = 1000 kg.m/s
92.
165. How is the total momentum before the collision?
a)
a) Equal to the total momentum after the collision
b)
b) Proportional to the total momentum after the collision
c)
c) Reverse proportional to the total momentum after the collision
93.
166. A truck with a mass of 1500 kg is moving east at 60 m/s. A car with a mass of 500 kg is travelling west at 100 m/s, the vehicles collide and stick together after impact. What is the velocity of the combined mass after the collision has occurred?
a)
a) 10 m/s
b)
b) 15 m/s
c)
c) 20 m/s
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