#1
What is the SI unit of force?
Newton
ExplanationForce unit named after Isaac Newton.
#2
Which of the following is not a fundamental force in nature?
Friction
ExplanationFriction is a contact force, not a fundamental force.
#3
Which law of motion is also known as the law of inertia?
Newton's First Law
ExplanationObjects remain at rest or in motion unless acted upon.
#4
What is the relationship between force, mass, and acceleration according to Newton's Second Law?
Force = Mass * Acceleration
ExplanationForce equals mass times acceleration.
#5
What is the unit of torque?
Newton-meter
ExplanationProduct of force and distance.
#6
Which law of motion explains the behavior of an object in equilibrium?
Newton's First Law
ExplanationObjects remain stationary or move with constant velocity.
#7
What is the law that states that for every action, there is an equal and opposite reaction?
Newton's Third Law
ExplanationPrinciple of action and reaction.
#8
Which of the following is a measure of an object's resistance to changes in its rotational motion?
Inertia
ExplanationProperty of mass related to rotation.
#9
What is the formula for calculating momentum?
Mass * Velocity
ExplanationProduct of mass and velocity.
#10
Which of the following is NOT a conservative force?
Friction
ExplanationFriction dissipates energy, unlike conservative forces.
#11
What does the term 'terminal velocity' refer to?
The velocity of an object when air resistance balances its weight
ExplanationMaximum speed due to opposing forces.
#12
Which of the following is NOT a type of friction?
Centripetal friction
ExplanationCentripetal force aids circular motion.
#13
In a system with constant velocity, what is the net force acting on the system?
Zero
ExplanationNo change in motion implies zero net force.
#14
What is the principle behind the conservation of angular momentum?
Angular momentum remains constant in the absence of external torque
ExplanationConservation law for rotational motion.
#15
Which of the following is an example of a non-inertial frame of reference?
A merry-go-round spinning at a constant rate
ExplanationAccelerating reference frame.