WGU C165 Unit 3 Physics questions with verified
answers
___________ is the time it takes for one full oscillation of a particle in a medium.
Ans✓✓✓-Period
A ball rolling across a smooth floor gradually slows to a stop. Why? Ans✓✓✓-Due
to friction, the ball gradually loses kinetic energy.
A battery contains chemical potential energy. When a battery is used to run a fan,
chemical potential energy is being _______. Ans✓✓✓-used. When a battery is
used to run a fan, chemical potential energy is being used.
A battery stores chemical energy. When the battery is hooked up to a circuit, this
_________is converted to electric energy Ans✓✓✓-potential energy. When the
battery is hooked up to a circuit, chemical potential energy is converted to electric
energy
A bicycle and a train are moving at exactly the same velocity. Which has more
momentum, the bicycle or the train? Ans✓✓✓-The train has more momentum.
A bumper car at an amusement park bumps into the back of another. The car in
front moves faster as a result of the collision, and the car behind it is slowed by
the collision. The cars have unequal mass. Which car experiences the greater
force during the collision? Ans✓✓✓-Each car experience a force of the same
magnitude.
A car is more likely to slide if it tries to stop on an icy road than on pavement,
because Ans✓✓✓-ice has less friction than does pavement
,A diver jumps down on a springboard. The diving board pushes the diver back up
into the air, and she falls downward into the water. Compare the magnitude of
the force of diver on the board with the force of the board on the diver at each
step.
When the diver has bent the board downward as far it bends:
The force of the diver on the board is **BLANK** the force of the board on the
diver. Ans✓✓✓-equal to
A diver jumps down on a springboard. The diving board pushes the diver back up
into the air, and she falls downward into the water. Compare the magnitude of
the force of diver on the board with the force of the board on the diver at each
step.
When the diver is being accelerated upward by the board unbending:
The force of the diver on the board is **BLANK**the force of the board on the
diver. Ans✓✓✓-equal to
A diver jumps down on a springboard. The diving board pushes the diver back up
into the air, and she falls downward into the water. Compare the magnitude of
the force of diver on the board with the force of the board on the diver at each
step.
When the diver is moving downward and is bending the board downward:
The force of the diver on the board is **BLANK** the force of the board on the
diver. Ans✓✓✓-equal to
A diver jumps down on a springboard. The diving board pushes the diver back up
into the air, and she falls downward into the water. Compare the magnitude of
the force of diver on the board with the force of the board on the diver at each
step.
, When the diver is moving upward because of the force from the board:
The force of the diver on the board is **BLANK** the force of the board on the
diver. Ans✓✓✓-equal to
A diver jumps down on a springboard. The diving board pushes the diver back up
into the air, and she falls downward into the water. Compare the magnitude of
the force of diver on the board with the force of the board on the diver at each
step.
When the diver is no longer in contact with the board:
The force of the diver on the board is **BLANK** the force of the board on the
diver. Ans✓✓✓-equal to
A driver applies the brakes to a moving car, and the car stops. Is work done on the
car? Ans✓✓✓-Work must be done to change the velocity of an object.
A duck is floating on the surface of a lake. When a wave passes through the water,
the duck will __________. Ans✓✓✓-move up and down, but it will return to
approximately the same spot after the wave passes
A force of friction is not likely to exist between two objects if Ans✓✓✓-they are
not touching
A man lifts a barbell off the ground. Is work done on the barbell? Ans✓✓✓-Work
must be done to move the barbell against the force of gravity.
A mechanical wave cannot travel through a ___________. Ans✓✓✓-vacuum.
answers
___________ is the time it takes for one full oscillation of a particle in a medium.
Ans✓✓✓-Period
A ball rolling across a smooth floor gradually slows to a stop. Why? Ans✓✓✓-Due
to friction, the ball gradually loses kinetic energy.
A battery contains chemical potential energy. When a battery is used to run a fan,
chemical potential energy is being _______. Ans✓✓✓-used. When a battery is
used to run a fan, chemical potential energy is being used.
A battery stores chemical energy. When the battery is hooked up to a circuit, this
_________is converted to electric energy Ans✓✓✓-potential energy. When the
battery is hooked up to a circuit, chemical potential energy is converted to electric
energy
A bicycle and a train are moving at exactly the same velocity. Which has more
momentum, the bicycle or the train? Ans✓✓✓-The train has more momentum.
A bumper car at an amusement park bumps into the back of another. The car in
front moves faster as a result of the collision, and the car behind it is slowed by
the collision. The cars have unequal mass. Which car experiences the greater
force during the collision? Ans✓✓✓-Each car experience a force of the same
magnitude.
A car is more likely to slide if it tries to stop on an icy road than on pavement,
because Ans✓✓✓-ice has less friction than does pavement
,A diver jumps down on a springboard. The diving board pushes the diver back up
into the air, and she falls downward into the water. Compare the magnitude of
the force of diver on the board with the force of the board on the diver at each
step.
When the diver has bent the board downward as far it bends:
The force of the diver on the board is **BLANK** the force of the board on the
diver. Ans✓✓✓-equal to
A diver jumps down on a springboard. The diving board pushes the diver back up
into the air, and she falls downward into the water. Compare the magnitude of
the force of diver on the board with the force of the board on the diver at each
step.
When the diver is being accelerated upward by the board unbending:
The force of the diver on the board is **BLANK**the force of the board on the
diver. Ans✓✓✓-equal to
A diver jumps down on a springboard. The diving board pushes the diver back up
into the air, and she falls downward into the water. Compare the magnitude of
the force of diver on the board with the force of the board on the diver at each
step.
When the diver is moving downward and is bending the board downward:
The force of the diver on the board is **BLANK** the force of the board on the
diver. Ans✓✓✓-equal to
A diver jumps down on a springboard. The diving board pushes the diver back up
into the air, and she falls downward into the water. Compare the magnitude of
the force of diver on the board with the force of the board on the diver at each
step.
, When the diver is moving upward because of the force from the board:
The force of the diver on the board is **BLANK** the force of the board on the
diver. Ans✓✓✓-equal to
A diver jumps down on a springboard. The diving board pushes the diver back up
into the air, and she falls downward into the water. Compare the magnitude of
the force of diver on the board with the force of the board on the diver at each
step.
When the diver is no longer in contact with the board:
The force of the diver on the board is **BLANK** the force of the board on the
diver. Ans✓✓✓-equal to
A driver applies the brakes to a moving car, and the car stops. Is work done on the
car? Ans✓✓✓-Work must be done to change the velocity of an object.
A duck is floating on the surface of a lake. When a wave passes through the water,
the duck will __________. Ans✓✓✓-move up and down, but it will return to
approximately the same spot after the wave passes
A force of friction is not likely to exist between two objects if Ans✓✓✓-they are
not touching
A man lifts a barbell off the ground. Is work done on the barbell? Ans✓✓✓-Work
must be done to move the barbell against the force of gravity.
A mechanical wave cannot travel through a ___________. Ans✓✓✓-vacuum.
