Vocabulary
Chapter 10
Chapter 11
Misc.
Vocabulary
100
the combination of all of the forces acting on an object
What is the net force
100
the amount of matter in an object
What is mass
100
a push or pull
What is a force
100
the change in velocity divided by the time it takes for the change to occur
What is acceleration
100
an object at rest will stay at rest unless an outside force acts upon it and an object in motion will stay in motion unless an outside force acts upon it. if the net force is zero, the object remains at rest, or if the object is already moving, continues to move in a straight line with constant speed
What is Newton's first law
200
the force that brings nearly everything to a stop
What is friction
200
a measure of how hard it is to stop an object
What is momentum
200
two or more forces exerted on an object are ________ ______ if their cancel each other and they do not change the object's velocity
What is balanced forces
200
found by dividing the total distance traveled by the total time taken
What is average speed
200
the speed of the object and the direction of its motion
What is velocity
300
the tendency of an object to resist a change in its motion
What is inertia
300
measures the speed and quantity of matter
What is mass
300
if the net force is not zero, the forces are __________
What is unbalanced forces
300
the speed of an object at one instant of time is the object's ____________
What is instantaneous speed
300
the acceleration of an object equals the net force divided by the mass and is in the direction of the net force
What is Newton's second law of motion
400
the size of the gravitational force exerted on an object
What is weight
400
the total momentum of a group of objects remains constant unless outside forces act on the group
What is law of conservation of mass
400
friction between a surface with microscopic roughness and object sliding across it
What is slididng friction
400
the direction and difference in position between your starting and ending points
What is displacement
400
for every action, there is an equal but opposite reaction
What is Newton's third law of motion
500
the point in an object that moves as if all the object's mass were concentrated at that point
What is center of mass
500
distance/time
What is speed
500
a=Fnet/m
What is the equation for Newton's second law of motion
500
an example of use of newton's third law of motion, the vehicle pushed the gas molecules downward and the gas molecules push the vehicle upwards
What is a rocket
500
the distance an object travels in a unit of time
What is speed
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