# Shared Flashcard Set

## Details

Experimenting with Forces and Motion
includes newtons laws and variables
19
Science
04/16/2020

Term
 Motion
Definition
 when an object's distance from a reference point changes
Term
 reference point
Definition
 a place or object used for comparison to determine if an object is in motion.
Term
 ISU
Definition
 standard units used worldwide based on set of ten. The ISU unit for length is the meter.
Term
 speed
Definition
 the distance an object travels in a unit of time. S = d/t
Term
 velocity
Definition
 speed in a given direction.
Term
 acceleration
Definition
 the rate at which velocity changes - how fast something is speeding up or slowing down or changing direction.
Term
 force
Definition
 a push or a pull
Term
 net force
Definition
 the sum of all the forces on an object.if they are in the same direction, you add them. if opposite directions, subtract the smaller force from the larger one.
Term
 unbalanced forces
Definition
 net force doesn't = zero. Changes an objects motion.
Term
 balanced forces
Definition
 net force = zero. Does not change an object's motion.
Term
 inertia
Definition
 the tendency of an object to continue doing what it's doing - if its at rest, it tends to stay that way, if it's moving it tends to stay that way. Depends directly on mass
Term
 mass
Definition
 the amount of matter in an object
Term
 newton
Definition
 a unit used for force measurements
Term
 Newton's first law
Definition
 an object will remain at rest or in motion unless forces cause that to change.
Term
 Newton's second law
Definition
 F=ma. If equal force is added to a set of objects, the less massive objects will accelerate more and vice versa. A larger force will be needed to accelerate a more massive object at the same rate as a less massive object.
Term
 Newton's third law
Definition
 For every action force, there is an equal and opposite reaction force. So, if I push down on the Earth with 80N of force, the ground will push back up on me with 80N. If the Earth is pulling an apple down with 1 N of force, the apple is pulling up on the Earth with 1 N of force. The apple would accelerate towards the Earth instead of the other way around because the Earth has more mass.
Term
 independent variable
Definition
 The INput change that the scientist sets up to begin the experiment.Goes in the first blank of the question format: What is the effect of ________ on ___________.Goes in the first column of a data table and on the x axis of a graph.
Term
 dependent variable
Definition
 DATA that is recorded during the experiment.DEPENDS on the independent variable.Goes in the second blank of the question format: What is the effect of _________ on ___________.Goes in the second column(s) of a data table and on the y axis of a graph.
Term
 Controlled variables
Definition
 The variables that need to stay the same in an experiment to make the trials "fair."
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