Motion
The definition of motion.
The change in position of an object.
What is the difference between speed and velocity?
velocity needs a direction
What is the formula for velocity?
Velocity = (Distance) / (Time) + direction
What can we find with a distance vs time graph?
speed of an object
How do you know if something moved?
It changes position from where the object originally was.
How do you calculate speed?
Speed = (Distance)/(Time)
What is the velocity of an object that is moving 16 meters in 2 seconds east?
8 m/s east
What goes on the x axis when graphing speed?
Time
What is the average speed of a cow that walks east 70 meters in 150 seconds? (Remember, the units must be m/s)
.46 m/s
Distance = 24 Meters
Time = 6 seconds
Direction = North
What is the velocity of this object?
4 m/s North
What does a horizontal line in a position vs time graph indicate?
The object is at rest (no movement)
If you were sitting on the train, do you think you're moving? Explain
No, because from your point of view you're standing still and everything outside the train is moving.
Yes, because you're attached to the train so if the train is moving then you are moving.
A porcupine moved toward a pond at a speed of 8 m/s. It took him 3 seconds. What was the distance he traveled?
24 meters
An object travels 36 meters in 3 seconds east. What is it's velocity?
12 m/s east
What does a position vs time graph with a curved line indicate about a moving object?
It's accelerating
What is the speed of an object moving east for 20 seconds at 120 m/s?
120 m/s
A pink alien moved West in its spacecraft for 2700 meters at a rate of 30 m/s. How much time did it take him to do this in seconds?
90 seconds
What does a negative slope with a curved line in a position vs time graph indicate?
Object is accelerating in the negative direction.