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23 Cards in this Set
- Front
- Back
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Define speed, if that's alright with you. |
Speed is simply how fast you are going, commonly measured in m/s when doing physics. |
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Please define velocity, if you don't mind. |
Velocity states the speed of an object, and the direction it is going in. (30 mph north, for example) |
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What is the formula used for speed, distance and time? |
Average Speed = Distance Moved/Time Taken S = D/T |
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Could you possibly define acceleration? |
Acceleration is how quickly the velocity is changing. This change can be a change in speed, direction, or both. |
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If you don't mind, I'd like you to tell me the formula for acceleration. |
Acceleration = (Final Velocity - Initial Velocity)/Time Taken a = (v - u)/t |
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In a distance-time graph, what is the gradient, and how do you work it out? |
The gradient is the speed, worked out by this formula: Speed = gradient = vertical/horizontal |
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In a distance-time graph, what are the flat sections? |
The flat sections are where the body has ceased moving. |
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In a distance-time graph, what is the relationship between steepness and speed? |
The steeper the graph, the faster it is going. |
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In a distance-time graph, what do downhill bits represent? |
Downhill sections represent the body returning to its starting point. |
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In a distance-time graph, what do the curves represent? |
Curves represent acceleration/deceleration. |
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In a velocity-time graph, what is the gradient? |
The gradient is the acceleration |
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In a velocity-time graph, what are the flat sections? |
Flat sections represent a steady speed. |
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In a velocity-time graph, what is the relationship between graph steepness and acceleration/deceleration? |
The steeper the graph, the greater the acceleration/deceleration. |
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In a velocity-time graph, what are uphill sections? |
Uphill sections are acceleration. |
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In a velocity-time graph, what are downhill sections? |
Downhill sections are deceleration. |
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In a velocity-time graph, how to you work out the distance traveled in a certain time? |
The distance traveled is the area underneath that section of graph. |
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In a velocity-time graph, what do curves represent? |
A curve represents changing acceleration. |
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In a velocity-time graph, how do you find the speed at any point? |
Read it off the velocity axis. |
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What is the force of gravity on Earth? |
10 m/s^2 |
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What is the formula for weight? |
Weight = Mass * Gravitational Field Strength W = m * g |
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What is Newton's first law of motion? |
Balanced forces mean no change in acceleration. |
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What is Newton's second law of motion? |
A resultant force means acceleration. |
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What is the formula for resultant force? |
Resultant Force = mass * acceleration F = ma |
