3.1.1
Motion along a straight line |
Displacement, instantaneous speed, average speed, |
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You met speed at KS3 |
velocity |
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and acceleration. |
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Representation by graphical methods of uniform and non-uniform acceleration, displacement, speed,
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You need to know the dynamics graphs that you met at GCSE
You have to know how to draw graphs to a high standard - and how to find gradients and areas under graphs (differentiation and integration will not be called for) |
Interpretation of velocity-time and displacement-time graphs for uniform and non-uniform acceleration; |
Need to understand the physical significance of areas under graph lines and gradients. |
Area under a v/t graph between two times is the distance travelled in that time interval
Gradient of s/t graph is velocity and gradient of v/t graph is acceleration |
3.1.2
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The equations of motion for constant acceleration in a straight line, including motion of bodies falling in a uniform gravitational field without air resistance |
Called Newton's Equations of motion.
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Techniques and procedures used to investigate the motion and collisions of objects |
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Apparatus may include trolleys, air-track gliders, ticker timers, light gates, data-loggers and video techniques.
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Acceleration due to gravity, g of free fall;
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Techniques and procedures used to determine the acceleration of free fall using trapdoor and electromagnet arrangement or light gates and timer |
Reaction time and thinking distance; braking distance and stopping distance for a vehicle. |
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3.1.3
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Independence of the vertical and horizontal motion of a projectile |
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Don't forget the interactive XL Spreadsheets |
Two-dimensional motion of a projectile with constant velocity in one direction and constant acceleration in a perpendicular direction. |
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The constant acceleration is due to gravity and the projectile is for example a horizontally fired bullet.... |