Units of Measurements
Distance or Length
What is the difference between speed and velocity?
Direction
What are the three ways an object can accelerate?
Speed up
Slow down
Change direction
You can tell an object has experienced motion when it has had a change in ___________?
Position
This value is always on the horizontal (x axis) when graphing both speed and acceleration?
Time
What is the SI Unit for time?
Seconds (s)
Distance/Time
What indicates a decrease in velocity?
A negative acceleration
The distance and direction of an object from its starting point is called what?
Displacement
When you are graphing these things __________ or __________, distance is on the vertical, or y-axis?
Speed or Velocity
What is measured in m/s/s or m/s2?
Acceleration
What type of speed indicated on a speedometer
Instantaneous speed
What is the acceleration of an object when the velocity is constant?
Zero
Double Jeopardy!!
What is the tendency of an object to resist a change in its motion called?
Inertia
In an acceleration graph, what value is on the y-axis or vertical axis?
Velocity
What can be measured in m/s or km/h?
Speed
What kind of velocity does an object have when it is NOT slowing down, speeding up, or changing direction?
Constant Velocity
What is the formula for Acceleration?
A= (Vf - Vi)/t
The change in one's position compared with another objects position is called what?
Relative Motion
On a line graph of speed, when you have a horizontal line what does this indicate?
No motion is taking place
What is the unit of measurement for mass? (Also inertia)
Kilogram (kg)
What is the Velocity (with correct units) of a skier that skis downhill 30m in 2 seconds?
15 m/s downhill
Calculate the acceleration of the space shuttle as it changes from 2500 m/s to 500 m/s in 50 seconds. (Don't forget your units!!)
-490 m/s/s or m/s2
Distance and Displacement are only equal when _______________?
You're traveling in a straight line in a single direction
On a line graph of acceleration (NOT SPEED) what is shown with a horizontal line?
A constant Velocity