Physics Vocab1
a change in the velocity of an object over time
acceleration
distance divided by time
average speed
________ is the overall force acting on an object after all forces are combined
Net force
9.8 m/s²
Acceleration due to gravity
What is force?
a push or pull acting on an object
different distances per time interval
Changing speed
straight-line difference between initial and final position
displacement
What is the the process of changing position?
Motion
distance ÷ time
speed
What is friction?
a force that impedes sliding motion
total length traveled or between points
distance
speed at a specific instant
Instantaneous speed
___________ is a quantity with magnitude only (e.g. time, distance)
scalar
F = (G * m1 * m2) / d^2
(force of) gravity
What is Newton's first law of motion?
an object in motion stays in motion unless acted on by a force
What is a quantity with both magnitude and direction?
vector
What is a graph showing how an object’s position changes over time?
Position-time graph
______ is a graph that shows how speed changes with time
Speed-time graph
displacement over time
velocity
What is Unbalanced forces?
forces that cause a change in the motion of an object
The force of attraction between objects with mass
Gravity
What is a diagram showing all forces acting on an object?
Free-body diagram
What is the study of motion without considering its causes?
Kinematics
= Δv/Δt
acceleration
What is negative acceleration?
a decrease in velocity