MOTION

singh.n.319
Mind Map by singh.n.319, updated more than 1 year ago
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This covers the main ideas upon what motion is, and terms related to it.
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MOTION
1 Reference Point
1.1 A place or object, used for comparison to determine if something is in motion
2 Motion is a change in position of an object with respect to time also on its reference point. Motion is typically described in terms of displacement, distance (scalar), velocity, acceleration, time and speed.
3 International System of Units
3.1 The International System of Units is the modern form of the metric system and is the world's most widely used system of measurement. Example: meter, centimeter, milimeter, decimeter
3.2 It is used to describe the distance an object moves. It is also used to describe quantities other than length.
4 Speed
4.1 Equation: Distance/Time
4.2 It is the distance the object travels per unit of time.
4.3 Average speed: The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval
4.3.1 Calculate: Divide total distance travelled by the total time
4.4 Instantaneous Speed: instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.
5 Velocity
5.1 If both speed and direction of an object in motion is given, then you know the velocity. It can also be said as speed with direction
6 Acceleration
6.1 Acceleration refers to increasing speed, or changing direction
6.2 Increasing speed: If the objects speed increases, it accelerates
6.3 Decreasing speed: The slowing down of an object, deceleration, is also acceleration
6.4 Changing direction: If the object travels at a constant speed, it is still accelerating. Objects can change their directions
6.5 Acceleration= Final Velocity-Initial Velocity/Time
7 Slope
7.1 Formula: Rise/Run
7.2 Steepness of a line on a graph is slope
8 Graphs
8.1 Line graph: The motion of an object can be shown in this graph where you plot distance vs time
8.2 Speed-Versus-Time-Graph: The acceleration can be determined from the slope/gradient of the graph. The steeper the gradient the higher the average speed. A horizontal line indicates the object is moving at constant velocity.
8.3 Distance-Versus-Time-Graph: The motion of an accelerating object can be represented on it. It is usually a curve line and if the curve goes up it is positive, whereas if it goes down it is negative
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