What is the energy something possesses by virtue of its mass?
AKinetic energy
BPotential energy
CRest energy
DMechanical energy
ESAS · Question Bank
Physics
200 questions · page 4 of 10. Answer in your head first, then check the solution.
What is the energy something possesses by virtue of its position?
AKinetic energy
BPotential energy
CRest energy
DMechanical energy
When the vector sum of the external forces acting on the system of particles equals to zero, the total linear momentum of the system ________
Abecomes zero
Bmaximizes
Cchanges abruptly
Dremains constant
What is conserved in an elastic collision?
AKinetic energy
BPotential energy
CRest energy
DMechanical energy
When can we say that a collision is a completely inelastic collision?
AWhen the kinetic energy lost is minimum
BWhen the kinetic energy is conserved
CWhen the two colliding objects sticks together after impact
DWhen the two colliding objects will separate after impact
What will happen to the kinetic energy if it is a completely inelastic collision?
AIt is conserved
BIt is lost to maximum value
CIt is gained from the loss of potential energy
DIt is lost to minimum value
Coefficient of restitution is the ratio of:
Arelative speed after collision to relative speed before collision
Brelative speed before collision to relative speed after collision
Crelative speed to absolute speed
Dabsolute speed to relative speed
What is the coefficient of restitution for a perfectly elastic collision?
A0
B1
CLess than 1
DGreater than 1
What is the coefficient of restitution for a perfectly inelastic collision?
A0
B1
CLess than 1
DGreater than 1
The coefficient of restitution always applies ___________
Ato only one of the colliding objects
Bto neither of the colliding objects
Cjointly to the colliding objects
Dto the bigger colliding objects
"When the vector sum of the external forces acting on a system of particles equals to zero, the total linear momentum of the system remains constant" This statement is known as:
ALaw of universal gravitation
BLaw of conservation of impulse
CLaw of conservation of momentum
DLaw of conservation of energy
The centripetal force is:
Adirected away from the center of the curvature of the path
Bdirected toward the center of curvature of the path
Ctangent to the curvature of the path
Deither directed away or toward the center of curvature of the path
What refers to the time needed by an object in uniform motion to complete an orbit?
Apath time
Borbit time
Crevolution
Dperiod
The centripetal acceleration of a particle in uniform motion is ________ the radius of its path
Adirectly proportional
Binversely proportional
Cequal
Dnot related in any way
"Every object in the universe attracts every other with a force directly proportional to the product of their masses and inversely proportional to the square of the distance separating them" This is known as
ALaw of conservation of energy
BLaw of universal gravitation
CLaw of conservation of momentum
DLaw of conservation of impulse
The gravitational force of the earth on an object varies ________ the distance of the object from the center of the earth
Ainversely as
Binversely as the square of
Cdirectly as
Ddirectly as the square of
A rotating body has kinetic energy. This statement is _________
Asometimes true
Bsometimes false
Calways true
Dalways false
What type of energy is usually transmitted by rotary motion?
AKinetic energy
BPotential energy
CMechanical energy
DRest energy
Angular momentum is the product of ________
Amoment of inertia and linear speed
Bmoment of area and angular speed
Cmoment of inertia and angular speed
Dmoment of area and angular speed
"When the sum of the external torques acting on a system of particles is zero, the total angular momentum of the system remains constant" This is known as
AConservation of energy
BConservation of impulse
CConservation of linear momentum
DConservation of angular momentum