Forces and motion
Gravity and Newton's laws
Inertia, speed, and velocity
friction and work
acceleration and air resistance
100
a push or pull that acts on an object
what is the meaning of force
100
it pulls objects to the ground.
what is an example of gravity
100
the measurement that combines both speed and direction of a moving object
What is the definition of velocity
100
a force that opposes the motion of one object moving past another
What is the definition of friction
100
the change in velocity over time in an object
What is the definition of acceleration
200
change of position over time
What is the definition of motion
200
an object at rest tends to stay at rest and an object in constant motion unless acted upon by an unbalanced force
What is newton's first law
200
how fast an object's position changes over time
What is the definition of speed
200
the use of a force to move an object a certain distance or to change an object
What is the definition of work
200
increases with velocity while friction does not
What is the definition of air resistance
300
a force that acts at the point of contact between two objects
What is the definition of contact force
300
the unbalanced force on an object is equal to the mass of the object multiplied by its acceleration: F=m times a
What is newton's second law
300
the tendency of any object to resist a change in motion or of a moving object to keep moving in a straight line
What is the definition of inertia
300
when you move a couch on the carpet it is harder to move then on the wood floor
What is an example of friction
300
it decreases as your mass increases as long as your force is not also changing
What is an example of acceleration
400
a force applied to an object by another body that is not in direct contact with it
What is the definition of non contact force
400
all forces occur in pairs and these two forces are equal in strength and opposite in direction
What is newton's third law
400
a very heavy bowling ball is hard to get rolling
What is an example of inertia
400
you push a couch on the floor and it is moving the way you want
What is an example of work
400
it causes a feather to fall slower then a pencil
What is an example of air resistance
500
a constant speed in a straight line
What is the definition of uniform motion
500
pulls objects big and small
What is the definition of gravity
500
the fastest human can run at 5.6 m/s
What is an example of speed
500
you are rolling a ball on the grass and its hard to roll and you are pushing a chair across the room on carpet and it is hard to move
What is two examples of friction
500
Motion and Forces and Motion
What is the first two lessons we are reading of chapter 11
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