Chapter 1 lessons 1-4 Flashcards
1
Q
motion
A
When an object changes position over time relative to a reference point.
2
Q
speed
A
the distance traveled by an object divided by the time interval during which the motion occurred.
3
Q
velocity
A
the speed of an object in a particular direction.
4
Q
acceleration
A
The rate at which velocity changes over time.
5
Q
force
A
a push or pull exerted on an object in order to change the motion of the object.
6
Q
newton
A
The SI unit for force.
7
Q
net force
A
The combination of all for the forces acting on an object.
8
Q
friction
A
a force that opposes motion between the two surfaces that are in contact.
9
Q
gravity
A
a force of attraction between objects that is due to their masses.
10
Q
weight
A
a measure of the gravitational force on an object.
11
Q
mass
A
An object never changes SI unit is kilogram (kg).
