#1
Which of the following is a scalar quantity?
Velocity
Acceleration
Distance
Force
#2
What is the SI unit of torque?
Newton
Joule
Watt
Newton-meter
#3
Which quantity is conserved in an isolated system according to the law of conservation of linear momentum?
Velocity
Acceleration
Momentum
Force
#4
Which law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted?
Zeroth Law
First Law
Second Law
Third Law
#5
Which fundamental force is responsible for holding electrons in orbit around the nucleus of an atom?
Gravity
Electromagnetic force
Weak nuclear force
Strong nuclear force
#6
What is the formula for calculating force?
Force = Mass * Acceleration
Force = Mass / Acceleration
Force = Distance / Time
Force = Work / Time
#7
In mechanics, what does the term 'momentum' represent?
The force applied to an object
The resistance of an object to motion
The product of an object's mass and velocity
The speed of an object in a specific direction
#8
Which of the following statements is true about static friction?
It always opposes the direction of motion
It is independent of the applied force
It is always greater than kinetic friction
It is constant for all surfaces
#9
What does the term 'center of mass' refer to in mechanics?
The point where an object's weight is concentrated
The point where the net gravitational force is zero
The point where an object starts moving
The point where an object is at rest
#10
What is the definition of angular velocity?
The rate of change of angular displacement
The rate of change of linear displacement
The force applied to a rotating object
The resistance to rotational motion
#11
Which of the following is an example of a non-conservative force?
Gravity
Friction
Tension
Normal force
#12
What is the principle behind Archimedes' buoyancy principle?
Objects at rest tend to stay at rest
The buoyant force on an object is equal to the weight of the fluid it displaces
For every action, there is an equal and opposite reaction
The acceleration of an object is directly proportional to the net force acting upon it
#13
What is the principle of conservation of energy in mechanics?
Energy cannot be created nor destroyed, only transferred or converted
Energy is created and destroyed in every process
Energy is only transferred in mechanical systems
Energy is conserved only in closed systems
#14
Which law of motion states that for every action, there is an equal and opposite reaction?
Newton's First Law
Newton's Second Law
Newton's Third Law
Law of Inertia
#15
Which law of motion is represented by the equation F = ma?
Newton's First Law
Newton's Second Law
Newton's Third Law
Law of Inertia
#16
What is the principle behind the operation of a pulley system?
Conservation of energy
Law of reflection
Mechanical advantage
Law of gravitation
#17
What is the principle behind the operation of a simple pendulum?
Law of gravitation
Law of conservation of energy
Law of inertia
Harmonic motion
#18
In fluid mechanics, what does Bernoulli's equation describe?
Pressure in a fluid at rest
Fluid flow in a pipe
Heat transfer in a fluid
Conservation of angular momentum
#19
What does Hooke's Law describe in the field of mechanics?
Pressure-volume relationships of gases
Elastic behavior of materials
Fluid flow in pipes
Wave interference patterns