motion and forces Flashcards
1
Q
always described relative to something else
A
motion
2
Q
the most common reference point for this is the earth’s surface, unless otherwise stated
A
motion
3
Q
the rate at which an object moves
A
speed
4
Q
the speed of an object in a particular direction
A
velocity
5
Q
velocities in the same direction are
A
added together
6
Q
velocities in the opposite direction are
A
subtracted from each other
7
Q
the rate at which velocity changes
A
acceleration
8
Q
3 ways that velocity can occur
A
- ) increase speed
- ) decrease speed
- ) change direction
9
Q
an object’s change in position over time as compared to a reference point
A
motion
