All about Kinetic
All moving energy has....
a) Potential energy
b) Kinetic Energy
c) Electrical Energy
d) Frictional Eenrgy
b) kinetic energy
Anything that has mass and takes up space
Matter
stored energy=
Potential Energy
When all forces acting on an object are the same, the object will-
A not move.
B increase in speed.
C decrease in speed.
D continue to move in the same direction.
A not move.
two or more forces that are not equal and opposite of one another; can cause change in motion
unbalanced force
Potential: Energy that is stored
Kinetic =Energy of motion
A combination of all the forces acting on an object:
Net Force
Bowling pins fall down because of: solar/ kinetic/. thermal /electrical.
energy that is transferred during a collision.
kinetic
What causes a change in motion?
a) Kinetic Energy
b) Potential Energy
c) Force
d) Position
c) Force
A force that opposes motion between two surfaces that are in contact
Friction
What is friction?
A force called friction acts against moving objects.
Friction opposes the motion of one object moving past another. If the friction is taken away, no force is needed to maintain motion at a steady rate
one object giving some or all of its energy to another object
Energy Transfer
Which example promotes the least amount of friction?
a) A student pushes a car across the room
b) A student pushes two sticks back and forth against each other
c) A students reads a book quietly on the carpet.
d) A student rubs both hands together in a quick fast motion.
c) A student reads a book quietly on the carpet.
Directions: Choose all correct responses.
Which two of the following are examples of work being done? A student-
A) timing how fast toy cars go. timing how fast toy cars go.
B)holding cars waiting to be used.holding cars waiting to be used.
c)rolling cars on different surfaces. rolling cars on different surfaces.
d)throwing rocks of various masses. throwing rocks of various masses.
c)rolling cars on different surfaces. rolling cars on different surfaces.
d)throwing rocks of various masses. throwing rocks of various masses.
Unit for Force
Newton
Which two words describe an object in motion?
Volume
Mass
Direction
Speed
a) Volume, Speed
b) Mass, volume
c) Direction, Speed
d) Speed, Volume
c) Direction, Speed
to come together with great force:
Collide
An object in rest will stay in rest, and an object in motion :
a) will stay in motion
b) will stop being in motion
c) will stay at rest
d) will defy gravity
will stay in motion
All of the following would be changes in Motion Except:
a) slowing down
b) moving at a constant speed
c) starting from a stopped position
d) going in a different direction
b) moving at a constant speed
A measure of the amount of matter in an object; measured in grams
Mass
Students conducted an investigation to answer the question, "Does mass affect how far a toy car will roll?" The independent variable was ______________ the dependent variable was _______________and one of their constants was
1 _____=Surface of the floor/Distance/Mass
2______=Surface of the floor/Distance/Mass
3_______= Surface of the floor/Distance/Mass
1. Mass
2. Distance
3. Surface
the study of natural phenomena (something that is difficult to understand) and the properties of matter and energy
Physics
Directions: Choose all correct responses.
During a collision, transfer of energy can change an object's -
A speed
B gravity
C friction
D direction.
speed and direction
The direction of an objects motion can be described with all of the following words except:
a) down
b)energy
c)right
d)forward
b) energy
The tendency of an object to resist a change in motion; (Newton's 1st Law - The Law of ________)
inertia