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40 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is the formula for momentum? |
P=mv |
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What is acceleration formula? |
A=Vf-Vi/t |
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What is the gravitational force on earth? |
9.8 N/Kg |
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What friction has the most? |
Static |
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Which friction is the least |
Rolling |
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Intertia? |
Newton’s first law: object remains at rest and stays in motion until it experiences unbalanced force |
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Newton’s second law? |
N=force= mass x acceleration |
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Newton’s third law? |
For every reaction there’s an opposite and equal reaction |
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Efficenicey |
output divided by input times 100 |
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What is the formula for work? |
Work or Joules= force x distance |
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How do you calculate (G)PE? |
Mass x Gravity x Height |
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What is the formula for power? |
power (in watts) = work done/ time taken or p=w/t |
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How do you calculate efficiency? |
Output/ input *100 |
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How do you calculate mechanical advantage? |
Output/input |
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What is conduction? |
Direct contact with particles |
Boiling water |
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What is convection? |
Swirling air that equally heats particles |
Oven |
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What is radiation? |
UVA, UVB, and UVC rays from the sun |
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The size of the gravitational force between two objects depends on their what? |
Mass and distance |
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The relationship among force, mass and acceleration is stated in what? |
Newton’s second law |
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Forces that are equal in size but opposite are what? |
Balanced |
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Unit of power is what? |
Watt |
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To describe velocity, what do you need to know? |
Speed and direction |
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The path of a projectile is what |
Curved |
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As you get further from earth, your weight will what? |
Decrease |
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Given a graph of velocity vs time, what does a horizontal line represent? |
Constant velocity |
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A device that covers thermal to mechanical is called what? |
Heat engine |
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You ride your bike down a straight road for 500m, then you ride back. Your distance is _____ compared to your displacement |
Greater |
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3 m/s North is an example of what? |
Velocity |
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Inertia varies depending on... |
Mass |
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The acceleration of an object moving from 32 m/s to 96 m/s in 8.0 seconds is what? |
8 m/s^2 |
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Speed is the ________ an object travels per unit of time. |
Distance |
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A 300 N force acts on a 200 kg object. What is the acceleration? |
15m/s ^2 |
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A 25 kg object accelerates at 12m/s^2. What is the force on the object? |
300N |
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When an object moves in a circular path, it accelerates because of what? |
Centripetal force |
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The speed on a speedometer is what? |
Instantaneous |
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An example of heating through convection is? |
Warm air rising to the ceiling |
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A force of 10 N applied to a box is pushed 10 m in 10s. How much power is used? |
10 Watts |
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The drag force of an object falling through the air equals the force of gravity, the object has reached its what? |
Terminal velocity |
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For any object in motion the greater the force applied the greater the what will be? |
Acceleration |
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Heat is thermal energy transferred from one object to another because the difference in ... |
Temperature |
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