#1
Which of the following is a fundamental principle of classical mechanics?
Newton's Laws of Motion
ExplanationFundamental principles describing the motion of objects.
#2
What does Newton's first law of motion state?
An object at rest will remain at rest unless acted upon by an external force
ExplanationObjects remain at rest or in uniform motion unless a net force is applied.
#3
What is the formula for kinetic energy?
1/2 mv^2
ExplanationThe energy of an object due to its motion.
#4
Which of the following is a statement of the conservation of momentum?
Total momentum is constant in an isolated system
ExplanationThe total momentum of a system remains constant unless acted upon by an external force.
#5
What is the relationship between an object's mass and its inertia?
Directly proportional
ExplanationThe tendency of an object to resist changes in its state of motion.
#6
Which equation represents Newton's second law of motion?
F = ma
ExplanationThe force acting on an object is equal to the mass times its acceleration.
#7
What is the SI unit of force?
Newton
ExplanationThe unit of force in the International System of Units.
#8
What is the centripetal force acting on an object moving in a circular path?
The net force directed toward the center of the circle
ExplanationThe force keeping an object in circular motion.
#9
Which law of thermodynamics is often stated as 'Energy cannot be created or destroyed, only transformed or transferred'?
First Law
ExplanationThe law of energy conservation.
#10
What is the work-energy theorem?
The total work done by all forces acting on an object is equal to the change in its kinetic energy
ExplanationRelationship between work done and change in kinetic energy.
#11
Which of the following is an example of a non-conservative force?
Friction
ExplanationA force that doesn't conserve mechanical energy.
#12
What is the term for the phenomenon in which an object moving relative to a rotating frame of reference appears to deviate from its straight path?
Coriolis effect
ExplanationApparent deflection due to Earth's rotation.
#13
What does Hooke's Law describe?
The behavior of springs when subjected to an external force
ExplanationSpring force is proportional to displacement.
#14
What is the principle of conservation of angular momentum?
The total angular momentum of a system is constant if no external torque acts on it
ExplanationAngular momentum conservation in absence of external torque.
#15
What is the relationship between angular velocity and tangential velocity in circular motion?
They are equal
ExplanationEquality in rotational and linear velocities.