ESAS · Question Bank

Physics

200 questions · page 3 of 10. Answer in your head first, then check the solution.

#41
The vector product of two parallel or antiparallel vectors is always ________
Aequal to 1
Bgreater than 1
Cless than 1
Dequal to 0
#42
The vector product of any vector with itself is _______
Aequal to 1
Bgreater than 1
Cless than 1
Dequal to 0
#43
Which is NOT a fundamental physical quantity of mechanics?
ALength
BMass
CVolume
DTime
#44
What is an arrowed line whose length is proportional to the magnitude of some vector quantity and whose direction is that of the quantity?
AVector diagram
BVector
CComponent
DResultant
#45
What is a scaled drawing of the various forces, velocities or other vector quantities involved in the motion of a body?
AVector diagram
BVector
CComponent
DResultant
#46
The _________ of a moving object is the distance it covers in a time interval divided by the time interval
Aacceleration
Binstantaneous speed
Caverage speed
Dinstantaneous velocity
#47
"The work done by the net force on a particle equals the change in the particle's kinetic energy". This statement is known as _________
ALaw of conservation of energy
BWork-energy theorem
CLaw of conservation of work
DTotal work theorem
#48
The _______ of a particle is equal to the total work that particle can do in process of being brought to rest
Akinetic energy
Bpotential energy
Ctotal energy
Dmechanical energy
#49
What is defined as any influence that can change the velocity of an object?
AImpulse
BForce
CEnergy
DWork
#50
What is a measure of the inertia of an object
ADensity
BWeight
CMass
DForce
#51
"If no net force acts on it, an object at rest will remain at rest and an object in motion will remain in motion at constant velocity". This statement is
Afirst law of motion
Bsecond law of motion
Cthird law of motion
Dd'Alembert's principle
#52
How many kilograms are there in one slug?
A11.9
B12.5
C13.2
D14.6
#53
What refers to an actual force that arises to oppose relative motion between contacting surfaces?
AAction force
BReaction force
CFriction
DDrag
#54
What refers to the force between two stationary surfaces in contact that prevents motion between them?
AKinetic friction
BSliding friction
CStarting friction
DStatic friction
#55
What is the maximum value of the static friction?
AStarting friction
BSliding friction
CKinetic friction
DDynamic friction
#56
What is TRUE between kinetic friction and static friction?
AKinetic friction is always equal to static friction
BKinetic friction is always less than static friction
CKinetic friction is always greater than static friction
DKinetic friction is equal to or greater than static friction
#57
What is another term for kinetic friction?
ADynamic friction
BStarting friction
CSliding friction
Dall of these
#58
For the same materials in contact, what is TRUE between coefficient of static friction and coefficient of kinetic friction?
ACoefficient of static friction is always less than the coefficient of kinetic friction
BCoefficient of static friction is always equal to the coefficient of kinetic friction
CCoefficient of static friction is always greater than the coefficient of kinetic friction
DCoefficient of static friction may be greater than or less than the coefficient of kinetic friction
#59
Efficiency of a machine is the ratio of:
Apower output to power input
Bpower input to power output
Ctotal work done to total energy
Dtotal energy to total power
#60
What is the energy something possesses by virtue of its motion?
AKinetic energy
BPotential energy
CRest energy
DMechanical energy

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