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34 Cards in this Set
- Front
- Back
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What causes an object to accelerate? |
External forces |
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Acceleration Formula |
F/m (force divided by mass) OR: 🔼V / 🔼t (velocity divided by time) |
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What is acted on an object from from an external object? |
An Applied Force |
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Formula for Force: |
F = ma (mass) (acceleration) |
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Why does friction exist? |
Objects must interact with each other. Friction always acts in the opposite direction of its motion |
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What type of force is a perpendicular force by a surface? |
Normal Force (Fn) (⬆️) |
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What type of force is always directed to the center of the planet (down)? |
Force of Gravity (Fg) (⬇️) |
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Force causes (...) change in speed |
acceleration |
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When forces are (...) an object doesn’t experience acceleration |
balance |
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Balance of Forces: |
No acceleration Unbalance of forces Acceleration occurs |
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What type of units is Acceleration measured in? |
m/s^2 (Meters per second squared) |
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What type of units is Mass measured in? |
Grams (g) |
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What type of units is Force measured in? |
Newtons (N) |
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What is momentum? |
Mass in motion |
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Formula for Momentum |
p = mv (momentum = mass times velocity) |
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What is impulse? |
Change in momentum |
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Formula for Impulse: |
🔼p = F🔼t 🔼p = Change in momentum F = Applied force 🔼t = elapsed time |
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What are the 2 different types of energy? |
Kinetic (energy of motion) and Potential (stored energy) |
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Formula for Kinetic Energy: |
KE = 1/2mv^2 Kinetic Energy = (half of mass) times (velocity squared) |
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Formula for Potential Energy: |
GPE = mgh Gravitational Potential Energy = weight (mg) times height (h) |
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What is temperature? |
Measure of the average kinetic energy |
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Farenheight: |
•F —> 32•F (Freezing) 212•F (Boiling) (• equals degrees) |
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Farenheight: |
*F —> 32*F (Freezing) 212*F (Boiling) (* = degrees) |
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Celsius: |
*C —> 0*C (Freezing) 100*C (Boiling) |
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Kelvin: |
(K) —> 2.7315 K (Freezing) 373.15 K (Boiling) |
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*F —> *C |
(100*F -32) • 5/9 = 37.8*C |
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*C —> *F |
(220 • 9/5) + 32 = 71.6*F |
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*C —> K |
22*C + 273.15 = 295.15 K |
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What is heat? |
The transfer of energy. Heat flows from hot to cold |
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What is thermal equilibrium? |
The "Middle ground" temperature |
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What is work? |
Energy transferred by force |
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What is energy? |
The ability to do work |
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Work formula: |
Work = Force • distance |
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Work formula: |
Work = Force • distance |
