Speed
What is the equation for SPEED?
Speed = distance/time
What variable (distance or time) goes on the X axis of our graph?
Time
What are the two different variables in an experiment?
dependent and independent
Jayden starts at the school and begins walking home. What is his reference point?
The school
what is the FIRST step in the 4 step method for calculating speed?
write the equation (s=d/t)
In the image, what letter shows the object AT REST?
B
What is an independent variable?
What the scientist is changing
How is our reference point represented on a table or graph?
0 time, 0 distance
Jennifer runs 20 meters in 5 seconds, what is her speed?
4 meters/second
What letter(s) show the object moving AWAY from the start (reference point)?
A and C
What is a dependent variable?
What the scientist is measuring (what is affected by the IV)
If you are given DISTANCE and TIME what other quantity can you calculate?
Speed
Provide an example of a unit for SPEED
m/s, yard/min, etc.
What letter shows the object moving toward the start (reference point)?
D
You conduct an experiment to see whether plants kept at warmer temperatures produce more oxygen. What is your IV?
temperature the plant is kept at
What is the difference between speed and velocity?
Velocity includes direction
Zarai walked 5 meters in 2 seconds, Yolanica walked 5 meters in 5 seconds. Who had the greater speed? Why?
Zarai because she travelled the same distance in less time
What variable (distance or time) goes on our Y axis?
Distance
You conduct an experiment to see whether plants kept at warmer temperatures produce more oxygen. What is your DV?
amount of oxygen produced
Josiah runs 30 yards in 10 seconds. What is his speed?
3 yards/sec