Graphing
Draw a position-time graph that shows an object at rest.
I will check graphs.
What are the units for distance?
m
What are the units for velocity?
What are the units for acceleration?
m/s2
What are the units for time?
s
What does a horizontal (flat) line mean on a velocity-time graph?
Constant velocity.
What is the difference between displacement and distance?
Displacement includes direction; distance does not.
What is the difference between velocity and speed?
Velocity has direction; speed does not
What are the three ways that an object can accelerate?
1) Speed up
2) Slow down
3) Change directions
The slope on a position-time graph is the same as what?
Velocity
On a Position-Time graph, a line moving diagonally downward toward the x-axis indicates the object is doing what? What is happening to the object's velocity?
Returning to the starting position at a constant velocity.
If a runner runs a full circle on a 400m track, what is their displacement?
0m
A sprinter runs a 100-meter dash in 15 seconds. What is their velocity?
6.6m/s
A plane goes from 0 m/s to 100 m/s in 20 seconds. What is its acceleration?
5m/s2
True or False: An object can have a speed of 50 mph but a velocity of 0 mph.
False
Which section of the graph shows acceleration?
Line D
If you walk 3 meters East and then 4 meters West, what is your total distance and your final displacement?
Distance: 7m
Displacement: 1 meter West
A student starts at the classroom door and walks 20 meters down the hallway to the water fountain in 10 seconds. They stop to drink for 5 seconds, then turn around and walk 20 meters back to the classroom door in 5 seconds.
Calculate the velocity in each of the three situations.
2m/s
0m/s
4m/s
A car drops their velocity from 20m/s to 5m/s over the course of 3s. What is their acceleration?
-5m/s2
How many satellites are required for a GPS to determine your exact location on Earth?
4