# Phys1 - Motion

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The flashcards below were created by user mse263 on FreezingBlue Flashcards.

1. Meter Conversions
• 1 gigameter (G) = 109 m
• 1 megameter (M) = 106 m
• 1 kilometer (km) = 103 m
• 1 centimeter (cm) = 10-2 m
• 1 millimeter (mm) = 10-3 m
• 1 micrometer (µm) = 10-6 m
• 1 nanometer (nm) = 10-9 m
• 1 Ångström (Å) = 10-10 m
• 1 picometer (pm) = 10-12 m
• 1 femptometer (fm) = 10-15 m
2. Other Conversions
• √2 = 1.4
• √3 = 1.7
• sin30 = 1/2
• cos30 = √3/2 ~ .86
• sin60 = √3/2
• cos60 = 1/2
• sin & cos 45 = √2/2 ~ .7
3. Milligram Conversions
1 mg = 10-3 g = 10-6 kg
4. Distance
• a Scalar quantity that refers to how much ground an object has covered during its motion
• will only equal 0 if you don’t move at all
5. Displacement
• a Vector quantity that refers to how far out of place an object is from where it started, aka it’s the object's overall change in position
• displacement is the quantity that can equal 0 when you end in the same place you started
6. (average) Acceleration
• change in velocity divided by the elapsed time for that change
• a = v2 - v1 / Δt
• aka change in velocity / elapsed time
7. Most basic translational motion equation:
• d = vt
• distance (meters) = velocity (m/s) * time (s)
8. What equation should be used if vf is missing?
d = vot + 1/2at2
9. What equation should be used if d is missing?
vf = vo + at
10. What equation should be used if t is missing?
11. Equation to find the time at the top of a projectile motion problem?
• ttop = voy/g
• same thing as saying m/s * s2/m
12. Equation to find the height at the top of a projectile motion problem?
h = voy2 / 2g
13. What equation can be used to determine an object’s displacement during FREE-FALL?
• d (Δh) = 5t2
• from d = vot + 1/2at2
14. Objects with a ____ contact area-to-mass ratio experience a more significant impact of wind resistance than their denser counterparts.
Objects with a LARGE surface area : mass ratio experience MORE wind resistance than their denser (therefore heavier) counterparts
15. Terminal Velocity
• vterm occurs when the drag Force upward is equal & opposite to the Force of gravity (Fg)

• • the object with the greatest terminal velocity will be:
• 1. the DENSEST

2. have the LEAST amount of contact area
16. Projectile Motion
• vox = vocosθ
• voy = vosinθ
17. Range Equations (3)
• r = vo2sin2θ / g
• r = 2voxvoy / g
• r45° = 4hmax
18. Which launch angle results in the maximum range & which results in the maximum height?
• a 45° launch angle corresponds to the maximum possible RANGE

• a 90° launch angle corresponds to the maximum possible HEIGHT

• 30° & 60° launch angles correspond to the same range

### Card Set Information

 Author: mse263 ID: 285169 Filename: Phys1 - Motion Updated: 2014-10-07 23:56:09 Tags: Physics Folders: Physics Description: Chapter 1 Show Answers:

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