PHYSICS EXAMS QUESTIONS AND VERIFIED ANSWERS, 100%
GUARANTEE
Which pair of quantities includes one quantity that increases as the other decreases during simple
harmonic motion? - velocity and displacement
The image shown is an illustration of Kepler's second law.
Which conclusion is best supported by the image? - The time needed to travel from W to
X is the same as the time needed to travel from Y to Z.
A bicycle tire has a radius of 0.23 m. The tire spins at a constant speed with a centripetal
acceleration of 42 m/s2.
What is the tangential speed of the tire? - 3.1 m/s
According to Newton's second law of motion, the acceleration of an object is inversely
proportional to which quantity? - mass
Why are the action and reaction forces described by Newton's third law of motion excluded in
the free-body diagram of an object? - They act on different objects, so they would not
appear together.
In an aerosol can used for spray paint, a highly compressed "propellant" helps move the liquid
into a "dip tube" so that it can be sprayed out. The valve through which the liquid sprays is
usually closed, but when it is pressed down, it opens and allows material to pass through.
Why does the liquid rise up through the dip tube when the valve is opened? - The
propellant gas wants to expand as much as it can, so if the valve is open, the propellant expands
and pushes the spray up out of the can making more room for itself to expand.
, What did Johannes Kepler contribute to the study of planets? - He provided mathematical
support for the heliocentric model.
According to the first law of thermodynamics, what could happen when heat is added to a
system? - The heat is turned into work done by the system.
A substance will have a relatively rigid, unchanging shape when it is a - solid.
A boy is running to the east and jumps into a stationary boat in a lake. Once the boy lands in the
boat, the boat moves to the east.
Which best compares the initial momentum of the boy with the final momentum of the boy/boat
system? - The initial momentum of the boy is equal to the boy/boat because the final
velocity of the boat is less than the initial velocity of the boy.
A spring that has a spring constant of 1400 N/m is stretched to a length of 2.5 m. If the normal
length of the spring is 1.0 m, how much elastic potential energy is stored in the spring? -
1575 J
An elevator has a weight of 14,700 N and has an acceleration of -0.30 m/s2. The free-body
diagram shows the forces acting on the elevator.
To the nearest whole number, what is the force of tension, Ft, acting on the elevator? -
14,250 N
Four landing sites are proposed for a lander. Data about the sites are listed in the table.
At which landing site would the lander have the greatest amount of gravitational potential
energy? - x
GUARANTEE
Which pair of quantities includes one quantity that increases as the other decreases during simple
harmonic motion? - velocity and displacement
The image shown is an illustration of Kepler's second law.
Which conclusion is best supported by the image? - The time needed to travel from W to
X is the same as the time needed to travel from Y to Z.
A bicycle tire has a radius of 0.23 m. The tire spins at a constant speed with a centripetal
acceleration of 42 m/s2.
What is the tangential speed of the tire? - 3.1 m/s
According to Newton's second law of motion, the acceleration of an object is inversely
proportional to which quantity? - mass
Why are the action and reaction forces described by Newton's third law of motion excluded in
the free-body diagram of an object? - They act on different objects, so they would not
appear together.
In an aerosol can used for spray paint, a highly compressed "propellant" helps move the liquid
into a "dip tube" so that it can be sprayed out. The valve through which the liquid sprays is
usually closed, but when it is pressed down, it opens and allows material to pass through.
Why does the liquid rise up through the dip tube when the valve is opened? - The
propellant gas wants to expand as much as it can, so if the valve is open, the propellant expands
and pushes the spray up out of the can making more room for itself to expand.
, What did Johannes Kepler contribute to the study of planets? - He provided mathematical
support for the heliocentric model.
According to the first law of thermodynamics, what could happen when heat is added to a
system? - The heat is turned into work done by the system.
A substance will have a relatively rigid, unchanging shape when it is a - solid.
A boy is running to the east and jumps into a stationary boat in a lake. Once the boy lands in the
boat, the boat moves to the east.
Which best compares the initial momentum of the boy with the final momentum of the boy/boat
system? - The initial momentum of the boy is equal to the boy/boat because the final
velocity of the boat is less than the initial velocity of the boy.
A spring that has a spring constant of 1400 N/m is stretched to a length of 2.5 m. If the normal
length of the spring is 1.0 m, how much elastic potential energy is stored in the spring? -
1575 J
An elevator has a weight of 14,700 N and has an acceleration of -0.30 m/s2. The free-body
diagram shows the forces acting on the elevator.
To the nearest whole number, what is the force of tension, Ft, acting on the elevator? -
14,250 N
Four landing sites are proposed for a lander. Data about the sites are listed in the table.
At which landing site would the lander have the greatest amount of gravitational potential
energy? - x
