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"Motion", Formulas - Coggle Diagram
"Motion"
Velocity and Acceleration
This section is all about acceleration. In this lesson we learned that acceleration is the rate of change of velocity, and that velocity includes speed and direction, because of this a change in velocity, could be either a change in speed or direction.
Calculating Speed
You can calculate the acceleration by dividing the change in velocity by the length of the time in which the change occurred. The formula to calculate speed is:
acceleration= change in velocity/time
Speed-Time graphs and Acceleration
You are able to show the speed, time and acceleration in speed-time graphs
Circular Motion
The acceleration toward the center of a curved or circular path is called the centripetal acceleration, when a car or object is going in moving in a circular motion the speed I always constant but the acceleration changes because of the changes in direction
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Graphs Use to fit Data
Position vs Time Graph
The Position vs Time Graphs has: Time in the X-axis. Position in the Y-axis. You can calculate the velocity in the slope of the line. Avg. velocity is all the slope, instantaneous is only the slope of a specific part of the line.
Example:
Velocity vs Time Graph
The Velocity vs Time Graphs has: Time in the X-axis. Velocity in the Y-axis. You can get the acceleration of an object based on the slope of the line. Average acceleration is equal to the average slope of the line. Meanwhile, instantaneous acceleration can be discovered by checking only for the slope of a specific part from the line.
Example:
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S1 Motion and Position: You can see something has changed of place because of the different position it has based on a reference point.
S1 Change in position: An object’s displacement is not the same as the total distance the object traveled.
S1 Average speed = Total distance traveled divided by its total time (traveled). Constant speed is different, cause this speed has the same speed over a define amount of time/the speed does not change. Instantaneous Speed is a specific amount of distance divided by the time it spent traveling it. The same applies with Velocity and Acceleration. Constant is that they remain unchanged. Average it the total displacement over time (velocity) or total velocity over time (acceleration). An instantaneous is a velocity of a specific time and/or acceleration in a specific time.
Velocity: Specific Displacement/Specific Time.
Acceleration: Specific Velocity/ Specific Time.
S2 Velocity and Momentum
Velocity is the speed and direction of an object. The difference between speed and velocity is that speed is calculated with distance and time, meanwhile velocity is calculated with the displacement and time of an object.
Momentum can be defined as the quantity of motion in an object. In other words it is the velocity and mass of an object combined. In order for momentum to change, the mass or velocity of an object must be changed.
Formulas
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Kinematic Formulas
D = vit + 1/2 at2
(vi +vf)/2 = D/t
a = (vf - vi)/t
vf2 = vi2 + 2aD
D = displacement
a = acceleration
t = time
vf = final velocity
vi = initial velocity
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