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Description
Flashcards by Erin Poppitt, updated more than 1 year ago
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Created by Erin Poppitt
almost 11 years ago
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| Question | Answer |
| Symbols | Speed = (M/S) - Metre per Second Distance = (M) - Metres Time Taken = (S) - Seconds / = Divide Acceleration = (M/S) to the power of 2 Momentum = (kg M/S) Mass = (kg) - Resultant Force = (N) - Newtons |
| Speed Equation | Speed = Distance Travelled / Time Taken |
| Distance Equation | Distance Travelled = Speed X Time Taken |
| Time Taken Equation | Time Taken = Distance Travelled / Speed |
| Acceleration Equation | Acceleration - Change in Velocity / Time Taken |
| Distance - Time Graph | Gradient = Speed Flat sections mean its Stationary Downhill means its going back to the start Steeping curve means its speeding up Levelling off Curve means its slowing down |
| Calculate Distance - Time Graph | Use scales on the Axis to work out the gradient Speed = Gradient = Vertical / Horizontal |
| Velocity | Velocity is a more useful measure of motion. It describes both speed and direction Velocity can be negative, for example is a car turns around |
| Acceleration | Change in Velocity or Speed |
| Force | Forces occur when 2 objects interact |
| Reaction Force Example | If a was on a table then the book is pushing down on the table with a force equal to the weight. The table also exerts an equal and opposite force |
| Friction | Friction is a reaction force - It happens as a result of an applied force |
| Arrow on a Force - Diagram | Length - Size of the Force Direction - Direction of the Force |
| Reaction on a Surface | If an object is resting on a surface it pushes downwards (because of its weight) |
| Resultant Force | Overall force acting on an object |
| Momentum Equation | Momentum = Mass X Velocity |
| Car Safety | Crumple Zones Airbags Seat Belts |
| Work Done | Energy Transferred |
| Kinetic Energy | Force Created by Movement |
| Kinetic Energy Equation | Kinetic Energy = 0.5 X Mass X Velocity Squared |
| GPE | GPE - Gravitational Potential Energy Height Energy |
| GPE Equation | GPE = Weight X Vertical Height Difference |
| Falling Objects Means | Kinetic Energy Gained = GPE Lost |
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