Position
What is the definition of position?
An object or person's location relative to a known location.
What is the definition of speed?
A measure of how fast something is travelling.
What is the definition of acceleration?
The rate at which velocity is changing.
A speed vs time graph is used to find what?
Acceleration
What do we call an object that is only affected by gravity?
Projectile
Where is a person or object's position 0?
At the origin.
What is the difference between speed and velocity?
Velocity is speed with a direction.
What is a unit of velocity?
Graphs of Motion are shown as what type of graph?
Line Graph
When an object is only affected by gravity, that object is said to be in what?
Free Fall
What are the coordinates of the origin on a graph?
(0,0)
What is the formula for speed?
Speed = distance/time
What is the formula for acceleration?
(V2-V1)/T
Speed
What do we call arrows that show direction and magnitude?
Vectors
If a person walks 10 feet away from the origin and then 8 feet towards the origin, what is their position?
2 feet.
Which type of speed is constantly changing?
Instantaneous speed
What does it mean when a object has a negative acceleration?
The object is slowing down.
When the line is flat.
If an object has a constant negative acceleration, what will be the final velocity?
0
A person's position's as they walked along a straight line were 0ft, 5ft, 10ft, 7ft, 20ft, 10ft. What is the total distance traveled?
36 feet
A person traveled 5 meters in 10 seconds, then 10 meters in 10 seconds, then 10 meters in 20 seconds. What is this person's average speed?
0.625 m/s
A car moving at 80m/s speeds up to 105m/s to catch a yellow light. It takes it 5 seconds to do so. What is the acceleration of the car?
5m/s2
On a speed vs time graph, when is the object shown to be at rest?
When the object is at a speed of 0.
A man drops a penny from the top of the empire state building. Assuming that gravity is the only force acting on the penny, what is the penny's acceleration right before it hits the ground?
9.8m/s2