#1
What is Newton's first law of motion?
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
ExplanationLaw of inertia
#2
Which of the following is a unit of force in the International System of Units (SI)?
Newton (N)
ExplanationSI unit of force
#3
Which of the following statements about inertia is true?
Inertia depends on the mass of an object.
ExplanationInertia and mass
#4
Which of the following quantities is a vector?
Velocity
ExplanationVector quantity
#5
What is the SI unit of work and energy?
Joule (J)
ExplanationSI unit of work and energy
#6
What is the equation for Newton's second law of motion?
F = m * a
ExplanationForce equals mass times acceleration
#7
Which of the following is NOT a conservative force?
Frictional force
ExplanationNon-conservative force
#8
What is the formula for kinetic energy?
KE = 0.5 * mv^2
ExplanationKinetic energy equation
#9
What does the term 'terminal velocity' refer to?
The maximum speed a falling object reaches when the force of gravity is balanced by the force of air resistance.
ExplanationMaximum speed of falling object
#10
What is the relationship between force and acceleration according to Newton's second law of motion?
Force is directly proportional to acceleration.
ExplanationForce and acceleration relationship
#11
What is the principle of conservation of momentum?
The total momentum of a closed system remains constant if no external forces act on it.
ExplanationMomentum conservation
#12
What is the coefficient of restitution?
A measure of how much kinetic energy is conserved in a collision
ExplanationKinetic energy conservation in collisions
#13
What is the centripetal force?
The force required to maintain an object in circular motion.
ExplanationForce for circular motion
#14
What is the formula for calculating gravitational force between two objects?
F = G * m1 * m2 / r^2
ExplanationGravitational force equation
#15
What is the principle of virtual work?
The work done by a conservative force is zero for any virtual displacement.
ExplanationVirtual work principle