8918573
Description
Flashcards by Sarah Eberle, updated more than 1 year ago
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Created by Sarah Eberle
almost 7 years ago
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| Question | Answer |
| Speed | -Formula: D/T: -Distance over time -The measure of how fast an object is moving |
| Velocity | - Formula: v=d/t - Velocity = distance over time - a description of both speed and direction - Unit=m/s |
| Acceleration | -Formula: A=Vfinal-Vinitial/Time - Vfinal-Vinitial over time - measures how much an object's velocity changes over time |
| Vector | direction |
| Scalar | no direction needed |
| Distance | how far an object moves in total |
| Displacement | the distance an object moves from a starting position |
| Friction Types | -rolling -sliding -fluid/air -static |
| Rolling | Example: bowling |
| Sliding | Example: Ice Skating |
| Fluid/Air | Example: air or water resistance |
| Static | initial friction when moving an object |
| Forces | balanced vs. unbalanced |
| Balanced Force | Two forces acting in opposite directions on an object |
| Unbalanced Force | gravity or air/fluid friction |
| Action | something that occurs |
| Reaction | The result of an action or what happens because of the action |
| Newton's Laws | there are three of them |
| Newton's 1st Law | "An object in motion stays in motion, an object at rest stays at rest with the same speed and velocity unless acted upon by an unbalanced force(Gravity)" - inertia is the tendency of an object to resist change in its velocity: whether in motion or motionless |
| Newton's 2nd Law | the acceleration of an object depends on the force acting on the object and the object's mass |
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Newton's 3rd Law
Image:
Hamilton (image/jpeg)
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For every action, there is an equal and opposite reaction |
| Kinetic Energy | - Formula: KE=1/2m X v^2 -energy in motion/being used to create an action of some kind - measured in Joules |
| Potential Energy | Formula: PE=mgh M= Mass G=acceleration of gravity(M/s^2) H= Height - Energy that is not being used - stored energy -the higher something is from Earth's surface the more potential energy it has |
| Momentum | Formula: P=mv M=Mass V=Velocity -depends on objects mass and velocity - Newton called it the "Quantity of motion" |
| Conservation of Momentum | -states that any time objects collide, the amount of momentum stays the same, but can be transferred between the objects - conservation means that thing is not changing - So in the "Conservation of Momentum", the momentum is not changing it is constant |
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