I like to Move It Move It
Movement in relation to a frame of reference.
Relative Motion
What is speed ?
A ratio of distance over time
This has both direction and magnitude.
Vector
The average speed of a donkey walking 10 meters in 12 seconds
.83 m/s
A push or pull on an object, capable of changing the object's state of motion
Force
Stationary objects used to judge motion accurately
Frame of Reference
Speed at one moment
Instantaneous Speed
This is speed with a direction
Velocity
The turtle was walking at 0.2 m/s forward and saw an alligator and sped up to 0.5 m/s over a period of 3 seconds. What was her acceleration?
0.1 m/s2
The total of all forces acting on an object
Net Force
The total length traveled between 2 points
Distance
What is the correct unit for speed?
m/s
This is a change in velocity over time.
Acceleration
The farmer had to slam his brakes on to avoid hitting a cow. He went from 8m/s to a complete stop in 2 seconds. What is his Acceleration (or Deceleration)?
-4m/s2
Equal Forces acting on an object in opposite directions;
No motion occurs
Balanced Forces
Displacement
What is the correct unit for acceleration?
m/s2
Is a person who is traveling at a constant speed of 100m/s accelerating?
NO
What is the acceleration of a runner who starts in the blocks and crosses the finish line at 2m/s after 10 seconds.
0.2 m/s2
Forces acting unevenly on an object and causing motion
Unbalanced
7 kilometers
What does the slope of a distance-time graph show you?
Average Speed
What are the ways that Acceleration can happen?
Speed Up, Slow Down, or Change Direction
What is the Final velocity of a ball starting from a resting position falling at 9.8 m/s2 in 5 s ?
49 m/s
What is the net force acting on the dollar sign ?
30N---> $ <--60N-----
30 N <----