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The starting point of motion is called the ____________
Reference point
Motion need a reference point and ____________
Direction
What is the total length travelled called?
Distance
The length between start point and end point is called:
Displacement
How do we calculate speed?
Distance divide by time
Velocity is speed and ____________
Direction
Positive acceleration is when
An object starts travelling faster
Negative Acceleration is when
An object slows down or starts moving backwards
Give an example of a contact force
Friction, push, pull
Give an example of a non-contact force
Gravity, magnetism, etc.
How do we combine forces in the same direction
We add them together
How do we combine forces acting in opposite directions
We subtract them from each other
