chapter 1 book 2 Flashcards
1
Q
motion
A
an objects change in position relative to a reference point
2
Q
speed
A
distance traveled divided by the time interval during which the motion occured
3
Q
velocity
A
the speed of an object in a particular direction
4
Q
acceleration
A
the rate at which veloctiy changes over time an objects accelerates if its speed direction or both change
5
Q
force
A
a push or pull exerted on an object in order to change the motion of the object force has size and direction
6
Q
newton
A
the SI unit for force
7
Q
net force
A
the combination of all of forces acting on the object
8
Q
friction
A
a force that opposes motion between two surfaces that are in contact
