or

or

taken

why

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

Don't know
Know
remaining cards
Save
0:01
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size     Small Size show me how

# chapter 11 Motion

### motion

14 km represents what? distance
30 m/s represents what? speed
34 min represents what? time
3 m SW represents what? displacement
12 m/s2 NORTH represents what? acceleration
150 mph NW represents what? velocity
6 m/s2 represents what? acceleration
The study of energy and what it does to matter physics
The study of motion mechanics
A system of objects that are not moving with respect to one another. This needs to be established to accurately describe the motion of something. frame of reference
Movement in relation to a frame of reference relative motion
How far something has moved, or the exact length/path between 2 points distance
Distance and direction of something from its starting point displacement
A quantity that has size or magnitude only scalar
A quantity that has both size/magnitude and direction vector
A student walks 5 m N, 5 m E, and 10 m S. What is her distance? 20 m
A student walks 5 m N, 5 m E, and 10 m S. What is her displacement? 7 m SE (square root of 50 using Pythagorean theorem - a=5 and b=5))
A student runs the 800 m in track, which is 2 full laps around the track. What is their distance and displacement? distance = 800 m displacement = 0 m (finish back where started)
The distance something travels in a certain amount of time speed
The distance and direction something travels in a certain amount of time velocity
Speed that doesn't change over time constant speed
The total distance traveled / total time for a trip. average speed
The speed at any given point in time instantaneous speed
Change in speed, direction, or both acceleration
What are some vector quantities? displacement, velocity, and acceleration
what are some scalar quantities? distance, speed
If a distance runner covers 1600 m in 280 s, what is his speed? 5.7 m/s
Florence Griffith-Joyner set the women's world record in the 200 m in 1988. She ran it in 21.34 s and still holds the world record today. What is her speed? 9.3 m/s
The max speed on many highways is 121 km/h. What distance can you travel at that speed if you went for 2 hours continuously? 242 km
The average tree sloth moves at a top speed of 0.743 m/s. How long would it take a sloth to "sprint" across our classroom (roughly 13 m)? 17.5 s
What is negative acceleration? deceleration
In 1970 the world record was set for drag racing. The car went from 0 to 110 m/s in 6.5 s. What was the acceleration? 16.9 m/s2
A fighter jet landing on an aircraft carrier must reduce its speed from 42.5 m/s to 0 m/sin 2 seconds. What is the acceleration? - 21.3 m/s2 (deceleration!)
What does constant speed look like on a d vs t graph? straight line angling up the steeper the angle, the faster the speed
What does constant speed look like on a s vs t graph? straight line across horizontal
What does acceleration look like on a d vs t graph? line curving up or curving down
What does acceleration look like on a s vs t graph? line or curve up or down
What does zero speed look line on a d vs t graph? straight line going across horizontal axis (right on the x axis)
If you calculate slope of a d vs t graph, what are you finding? speed (slope = rise (y value difference which is distance)/run (x value difference which is time))
If you calculate slope of a s vs t graph, what are you finding? acceleration speed (slope = rise (y value difference which is speed)/run (x value difference which is time))
What is G force? a measure of the force felt on your body standing still at the surface of the earth
What causes + G forces? rapid acceleration which pushes down on your body
What causes - G forces? rapid declaration which pushes up on your body
What causes blackout on a roller coaster too many + G forces
What is the problem with experiencing too many - G forces redout - blood vessels in brain bursting
What is the term for adding two vectors like velocity resultant vector
If a plane is flying at 500 km/h S and the wind is blowing at 65 km/h W, what is the resultant velocity? 504 km/h SW (Square root of 500 squared + 65 squared)
All measurements in science must have a ___ and a _____. number and a unit of measure
All measurements in science are made to the right number of significant digits which includes all the lines you know for sure plus one _____ between the lines guess
convert 5 m to km .005 km
convert 5 km to m 5000 m
convert 4 cm to mm 40 mm
Created by: tbrandt