Vocab
Instantaneous speed:
Displacement:
Distance:
Acceleration:
Velocity:
1. The speed of an object that a given instance in time
2. The distance and direction of an object's change in position
3. The amount of space between two things, points, lines, etc.
4.The rate of change of velocity
5. The speed and direction of an object's motion
Acceleration
Top: Velocity (v)
Bottom: Acceleration (a) multiplied by time (t)
Convert 1 second to hours
Convert 15 minutes into hours
Convert 12 hours to seconds
1. 0.00027hrs
2. 0.25hrs
3. 43,200 seconds
Units for displacement
Meters (m)
1. Acceleration towards the center of a curve or circular path, speed remains constant but continues to change direction
Speed:
Direction:
Motion:
Vector:
Frame of reference:
1. The distance an object travels per unit of time
2. The location of something relative to something else
3. A change in an object's position relative to a reference point
4. A quantity having both magnitude and direction
5. A framework that is used for the observational description of a physical phenomena
Momentum
Top: Momentum (p)
Bottom: Mass (m) and Velocity (v)
Convert 1 mile to kilometers/ explain formula
Convert 3 km to miles/ explain formula
Convert 20 meters to miles/ explain formula
Convert 6 meters to kilometers
miles to meters = divide by 1,000, meters to kilometers = multiply by 1600 = 1.6 km per mile
1. 1.6 mile
2. answer: 1.875 miles, multiply 3 by 1,000 to convert to meters, divide by 1600 to convert to miles
3. meters to km = 1600 divided by 1,000, divide 20 by 1.66, answer: 12.42 mi
4. 0.006 km
Units for Speed
Meters per second (m/s)
Cause of thrown objects to travel a curved path
The path objects follow back to Earth
1. Earth's gravity
2. Trajectory
Momentum
Trajectory
Terminal velocity
Projectile
Dependent Variable
1. The product of an object's mass and velocity
2. The curve described by a projectile
3. The maximum speed an object will reach when falling
4. An object that is airborne and in motion
5. Factor that changes as a result of other factors changing
Speed
Top: Distance (d)
Bottom: Speed (s) multiplied by time (t)
How many feet in a yard?
12 yards to feet
5 feet to yards
9 yards to inches
110 inches to yards
4 feet to inches
1. 3ft
2. 36 feet
3. 1.66 yards
4. 324 inches (yards to feet = multiply by 3, feet to inches = multiply by 12)
5. 3.055 yards
6. 48 inches
Units for Velocity
Meters per second (m/s) (sometimes plus distance)
Two dimensions of motion + their velocity
At what point do objects stop speeding up in vertical motion
1. horizontal motion, velocity remains constant. Vertical motion, velocity increases
2. Terminal Velocity
Independent Variable
Constant
Experiment
Control Group
Theory
Scientific Law
1. Factor that changes, affects the measure of another variable
2. A variable that remains the same throughout the entirety of an experiment
3. Organized procedures used to test a hypothesis; testing the effect of one thing on another
4. The standard by which results can be compared
5. A proposed explanation that is subject to experiment and is still questioned
6. A statement concerning what happens in nature that seems to be true all the time
Velocity
Top: distance (d)
Bottom: Velocity (v) multiplied by time (t)
Units for Acceleration
Meters per second squared (m/s2)
What directions do velocity and acceleration move in when speeding up
What direction do velocity and acceleration move in when slowing down
The same direction
Opposite directions
Draw/Act out the following kinds of acceleration on a graph
Positive speeding up
Positive slowing down
Negative speeding up
Negative slowing down
1. Line arching upwards towards the top right
2. Line curving downwards in arch from top right
3. Line arching upwards toward the top left
4. Line curving downwards in arch from the top left
Units for Momentum
Kilograms multiplied by meters per second (kg*m/s)
What directions do velocity and acceleration move in when changing direction
Not the same directions and not opposite directions