Vocab 1
What is speed?
A change in position in a time interval.
What is position?
A location in space.
What is the velocity of something in constant position?
The velocity is 0.
What is the formula for velocity?
Distance/Time (d/t)
How do you find an object's acceleration?
Subtract the 'initial velocity' from the 'final velocity', then divide the result by the amount of time recorded.
What is a vector?
A quantity that has both size and direction.
What is velocity?
Speed in a specific direction.
What is the velocity of something in changing motion described as?
Constant.
Samuel drove 720 meters in 360 seconds. What is his velocity in m/s?
2 m/s
A car goes on emergency stop after driving 120 m/s in 5 seconds. What was the car's acceleration? (m/s)
-24 m/s^2
What is motion?
A change in position over time.
What is acceleration?
The rate at which velocity changes.
If the acceleration of something is zero, what can its type of motion be?
It could be in either constant position, or in constant velocity.
A runner ran 2.4 kilometers in 10 minutes. What was his velocity? (m/s)
4 m/s
what is the main unit for answering speed and velocity questions?
meter/seconds, meter/seconds squared
What is time?
A dimension that we exist in.
What is the study of 'how things move'?
Kinematics
If a graph (In distance vs. time) has a line with a velocity of 5 m/s, what is its y coordinate on a velocity vs. time graph?
5
How many sig figs are in 4,000 , 2 milliseconds, and 3.1470?
1, infinity, 5
The amount of matter in an object.
What is a reference point?
A location to which you compare other locations.
What is centripetal acceleration?
Acceleration in circular motion.
How do you describe an object with constant acceleration, in terms of position?
The object is in changing-changing position.
A man sprinted 7 m/s in a track meet in 52 seconds. How far did he run?
364 meters.
Convert 4 years (consecutive), 3 weeks into days
1482 days.
(Including Leap Year.)