Summary of Uniformly accelerated motion 1 [IB Physics SL/HL]
Uniformly accelerated motion is a fundamental concept in Physics that is crucial to understand.
When not accelerating, Equations of motion are simple and relate speed or Velocity to distance or Displacement over time.
Acceleration is defined as a change in Velocity over time, indicating that speed is changing.
Four main Equations of motion are:
- v = u + at
- s = ut + 0.5at^2
- v^2 = u^2 + 2as
- s = (v + u) * t / 2
Displacement (s), initial Velocity (u), final Velocity (v), Acceleration (a), and time (t) are key variables used in these equations.
Velocity is a vector quantity measured in meters per second, while Acceleration is measured in meters per second squared.
A helpful strategy for solving Acceleration equations is to create a "shopping list" of known and unknown variables.
An example problem involving Deceleration is discussed, demonstrating how to use the Equations of motion to find the time taken to stop a moving object.
Speakers/sources
- The speaker in the video.
Notable Quotes
— 01:38 — « If your velocity is constant, then youre not accelerating. »
— 02:13 — « Anytime your speed or velocity is changing, youve got some sort of acceleration. »
— 04:01 — « Velocity is just the slope of the tangent on a displacement vs time graph. »
— 05:10 — « Meters per second squared, thats why its meters per second squared. »
— 07:55 — « How long does it take for you to stop? It implies a time, so thats what were looking for here. »
Category
Educational