Slope
What does the slope of a line represent in a graph?
Rate of change
Define uniform motion.
Motion of equal distance over equal time intervals. OR Constant Velocity
What is the difference between a vector and scalar?
Vectors have direction and magnitude. Scalars only have magnitude.
What does the slope of a position-time graph indicate?
Velocity
Speed can be calculated as distance over time. Find speed for an object that traveled 20 meters in 5 seconds.
4 m/s
If a slope is negative, what can you say about the change in the physical quantity over time?
It is decreasing.
How is uniform motion represented on a position-time graph?
(Hint: Say something about the slope or shape of the graph.)
Constant positive or negative slope/straight line.
Give an example of a scalar quantity and a vector quantity.
Vectors: Velocity, Displacement, Acceleration
Scalars: Distance, Speed, Mass
How can you determine if an object is accelerating on a velocity vs. time graph?
It will have a non-zero slope.
Find the displacement of an object whose position changed from 4 meters to 10 meters over 10 seconds.
6m
How would you define a constant slope? (How does it look on a graph?)
straight line/constant rate of change
How is uniform motion represented on a velocity-time graph?
(Hint: Say something about the slope or shape of the graph.)
Constant slope of zero/horizontal line.
Scalar or vector? Displacement.
Vector
How can you determine if an object is accelerating by looking at a position vs. time graph?
The graph will be either concave up or down/ have a changing slope.
Calculate the velocity of an object that fell 10m in 2 seconds.
-5 m/s
Object at rest
Define non-uniform motion.
Changing velocity/moves different distances over equal time intervals/accelerated movement
Scalar or vector? Force.
Vector
How can we tell the direction an object is travelling based on its velocity-time graph?
Acceleration is the change of velocity over time. a = v/t
Find the acceleration of an object that sped up to 18 m/s over 3 seconds.
6 m/s2
What is the meaning of slope on a velocity-time graph?
acceleration
How does the rate of change of a position-time graph of uniform motion compare to a graph of non-uniform motion?
Uniform: constant/linear
Non-uniform: not constant/concave
Define acceleration and classify it as a vector or scalar quantity.
Acceleration is when an object changes speed. It is a vector.
How can you use graphs to predict the future motion of an object?
Kinematic equations.
Find the displacement of an object that traveled 5m right, 20m left, and finally 10m right.
-5m