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Objects can move in 4 ways. List the ways.
a. In a straight line
b. In a curved path
c. As a vibration (back and forth)
d. As a rotation
What is a change in the position of an object?
Motion
An object that is standing still is called ____________.
Fixed Object
Everyday we compare objects that change positions ...
with objects that do not (reference point)
The change in one object’s position compared with another object’s position
Relative motion
What is like your point of view?
Frame of Reference
A reference point is...
a place or object used to determine if an object is in motion.
What makes objects move or stop?
Forces
Any push or pull.
Force
What are 4 ways a force can affect the motion of an object?
1.) Start to move 2.) Move faster 3.) Slow down or stop 4.) Change direction
A force that must touch an object to affect it.
Contact Force
What can change both the position and the motion of an object?
Pushing or pulling
All forces have ...
size and direction
Explain why an object does not move when pulled with the same force in opposite directions?
Balanced Forces. The forces cancel each other out.
The amount of force acting on an object affects how the object changes...
speed, direction, or both
What acts in opposite directions cancel each other?
Balanced Forces
