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.
Force equals mass times acceleration.
For every action, there is an equal and opposite reaction.
The force of gravity depends on the masses of the objects and the distance between them.
#2
Which of the following is a unit of force in the International System of Units (SI)?
Pascal (Pa)
Newton (N)
Joule (J)
Watt (W)
#3
Which of the following statements about inertia is true?
Inertia depends on the mass of an object.
Inertia depends on the velocity of an object.
Inertia depends on the acceleration of an object.
Inertia depends on the weight of an object.
#4
Which of the following quantities is a vector?
Speed
Distance
Mass
Velocity
#5
What is the SI unit of work and energy?
Newton (N)
Joule (J)
Watt (W)
Pascal (Pa)
#6
What is the equation for Newton's second law of motion?
F = m * g
F = m * a
F = m / a
F = a / m
#7
Which of the following is NOT a conservative force?
Gravitational force
Frictional force
Electrostatic force
Spring force
#8
What is the formula for kinetic energy?
KE = 0.5 * mv^2
KE = mg
KE = F * d
KE = m * a
#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.
The velocity of an object when it is initially released from rest.
The velocity of an object in free-fall just before it hits the ground.
The velocity of an object when it is accelerated by a constant force.
#10
What is the relationship between force and acceleration according to Newton's second law of motion?
Force is directly proportional to acceleration.
Force is inversely proportional to acceleration.
Force and acceleration are unrelated.
Force is proportional to the square of acceleration.
#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.
The velocity of an object remains constant unless acted upon by a net external force.
For every action, there is an equal and opposite reaction.
The force of gravity depends on the masses of the objects and the distance between them.
#12
What is the coefficient of restitution?
A measure of an object's resistance to motion
The ratio of an object's momentum before and after a collision
A measure of how much kinetic energy is conserved in a collision
A measure of an object's gravitational potential energy
#13
What is the centripetal force?
The force required to maintain an object in circular motion.
The force exerted by an object due to its rotation.
The force exerted by an object on another object in contact with it.
The force required to lift an object off the ground.
#14
What is the formula for calculating gravitational force between two objects?
F = G * m1 * m2 / r^2
F = m * g
F = m * a
F = k * x
#15
What is the principle of virtual work?
The work done by a force equals the change in kinetic energy.
The work done by a conservative force is zero for any virtual displacement.
The work done by a non-conservative force is equal to the change in potential energy.
The work done by an external force is equal to the displacement of the object.