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19 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is velocity? |
Velocity is like speed and is how fast something is going. However speed is simply how fast whereas velocity is how fast something is going but it requires a direction. |
Like speed. But ... |
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Name different things on a distance - time graph. |
⭕Gradient = speed ⭕Flat sections show where it's stationary. ⭕Straight means a constant speed. ⭕Steeper the line the faster. ⭕Downhill means it's going back towards the starting point. ⭕Curves represent acceleration or deceleration. ⭕Steepening curve means speeding up. ⭕Leveling off curve means slowing down. |
Gradient. Flat. Straight. Steeper. Curve. Downwards. Leveling off curve. Steepening curve. |
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How to calculate sped from a distance - time graph? |
Speed= gradient = vertical ÷ horizontal |
What is speed on a graph? |
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Acceleration formula is... |
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Acceleration, time taken, change in velocity. |
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Calculation for weight. |
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Weight, gravitational field strength, mass. |
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Gravity on Earth. |
10 newtons |
In newtons. |
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Gravity on moon. |
8 newtons. |
In newtons |
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What is resultant force? |
Resultant force is the overall force on a point or object. |
Break the word down. |
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Resultant forces. Example. |
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Teapot and gravity. |
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Calculating force. |
Force= mass × acceleration |
Force, acceleration, mass |
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What force slows thing down? |
Friction. |
Creates heat also. |
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When does drag increase? |
When the speed increases drag will increase. |
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Terminal velocity |
Is dependant on the drag in comparison to an objects weight. For example a skydiver. |
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Stopping distance. |
Stopping distance is thinking distance plus braking distance. |
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Thinking distance (factors). |
1) how fast you are going. 2) how dopey you are this can be dependant on how much alcohol or drugs you have consumed, your tiredness and if you have a careless attitude. |
There are 2. |
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Braking distance (factors). |
1) how fast you're going. 2) the quality of your brakes. 3) the qualities of your tyres. 4) how good the grip is (eg. Road surface, weather conditions, tyres). |
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Calculating work done. |
Work done = force × distance. |
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Gravitational potential energy. |
Measures in joules. Erti le positioning a gravitational field. When an object is raised vertically, work done against the force of gravity, and the object gains gravitational potential energy. |
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Calculating GPE. |
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