Frames of reference
If you are riding in a car with a friend, what is your friends relative motion to you?
They are sitting still or not moving
This is measured in SI units of meters per second. No direction is included.
Speed
An object does not do this if its velocity remains the same.
Accelerate
These have both magnitude and direction
Vectors
This is a combination of the distance traveled and the direction in which that distance was traveled.
Displacement
What distances can be most accurately measured with a ruler
small distances
The direction in a straight line from the starting point to the end point of an objects motion is this.
Displacement
Gravity acts upon all objects on Earth with this rate of acceleration.
9.8 m/s2
The vector remaining after the completion of a vector addition calculation is called this
Resultant Vector
Does light accelerate?
No
A ball is rolled up a hill a distance of 7 meters before it slows, stops and begins rolling back downhill a distance of 5 meters, what is the ball displacement?
2 meters uphill
An object moving at 40 m/s takes 10 seconds to come to a stop. What is the objects acceleration?
-4m/s
Speed is different that velocity in this way.
Velocity has a direction
This can be changes in speed, changes in direction, or changes in both.
Acceleration
Acceleration on a distance time graph is this type of line.
Non linear
Displacement vectors of 2 km south 2 km east and 2 km north combine for a total displacement of this.
2 km east
A constant slope on a distance time graph indicates this type of speed.
Constant
A car moving at 15 m/s that comes to a stop under this type of acceleration
Negative
The slope of a speed time graph illustrates this
Acceleration
If an object is accelerating at 9.8 m/s2 this object is likely in this form of motion
Free fall
The proper SI unit for measuring distance is this.
The meter
Two or more velocities can be combined using this method.
Vector addition
The acceleration of a moving object is calculated by dividing the change in this by the time over which the change takes place.
Velocity/Speed
A flat line on a speed time graph shows this.
Constant speed
Velocity is a comination of these things
Speed and direction