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M2 Sci U3 Motion and Forces
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How do we combine forces acting in opposite directions
We subtract them from each other
How do we combine forces in the same direction
We add them together
Give an example of a non-contact force
Gravity, magnetism, etc.
Give an example of a contact force
Friction, push, pull
Negative Acceleration is when
An object slows down or starts moving backwards
Positive acceleration is when
An object starts travelling faster
Velocity is speed and ____________
Direction
How do we calculate speed?
Distance divide by time
The length between start point and end point is called:
Displacement
What is the total length travelled called?
Distance
Motion need a reference point and ____________
Direction
The starting point of motion is called the ____________
Reference point