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Unit 1: Motion and forces - Coggle Diagram
Unit 1: Motion and forces
Newton's laws of motion
Law 1: Law of inertia: An object at rest remains at rest until an external force acts upon the object.
Law 2: F=ma: The force of an object is dependent upon the mass and the acceleration of the object.
Distance time graph: Distance on the y-axis and time on the x-axis. The slope (rise/run) of the graph is able to calculate the average velocity of the motion.
Speed time graph: Speed on the y-axis and time on the x-axis. The area under the graph (can be calculated by integration) is able to give the displacement of the motion.
The Kinematics Equation (SUVAT):
S- Displacement (m)
U- Initial velocity (m/s)
V- Final velocity (m/s)
A- Acceleration (m/s^2)
T- Time (s)
The acceleration of gravity is calculated to be 9.81 m/s^2 on Earth. Even though it is mostly constant, the acceleration due to g will change when one is further from the Earth's core. Gravity on Earth was discovered by Sir Isaac Newton. A famous experiment is Galileo Galilei Leaning Tower of Pisa drop.
Momentum
p=mv (momentum = mass x velocity)
Momentum can also relate to collision.
Momentum is directly proportional to mass and velocity
Energy
Energy is related to work done and power.
Efficiency can be calculated and visualized with a sankey diagram.
