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Force and Motion essentials to be reviewed/learned for application quiz
Terms in this set (16)
What is gravity?
a force that causes matter to be attracted to other matter. This force is weaker than electricity, magnetism. Additionally this force is affected by mass.
How does the force of gravity affect objects on Earth and in our solar system?
one result of this force acting on another object is weight. Furthermore this force is the reason planets orbit the sun.
What is a magnet?
an object that attracts or repels another of its kind. Matcrials like iron, cobalt, nickel have this a property that allow them to be used to make this object.
What is a magnetic field?
Invisible field that extends in all directions causing objects to either be attracted or repelled
Where are magnetic fields the strongest?
this invisible field are strongest at poles, distance is an important variable
How can motion be described?
a change in position over time-described by speed, velocity, and acceleration
How are speed, velocity, and acceleration related?
variable one is measured distance in an amount of time, variable two measures distance in a direction, variable three measures change in velocity
What happens when an object at rest or in motion experiences an unbalanced force?
The jobject will accelerate in the direction of the force
What causes an object to accelerate?
Objects accelerate when acted on by unbalanced forces
What happens when two unbalanced forces act on an object?
The object moves in the direction of the stronger force
What kinds of forces can act on an object?
Friction, electricity, magnetism, gravity
What is motion?
change in position over time
What causes an object to speed up or slow down?
Unbalanced forces acting on the object
How can we describe the motion of an object?
An object's motion can be described relative to the observer or other stationary objects
What is friction?
Constant force between two solids
How does friction affect the motion of an object?
Friction always causes an object to lose its energy and come to a stop/slowdown
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