Power using Derivative and Unit Vectors - Example (10:27)
Example: A 0.280 kg object has a position described by the function, position as a function of time equals 5.00 t^3 - 8.00 t^2 - 30.0 t meters. What is the net power being delivered to the object at 2.00 seconds? This is an AP Physics C: Mechanics topic.
0:00 The example
0:56 Average or Instantaneous?
1:36 Net force and velocity with unit vectors
3:17 Uniformly Accelerated Motion?
3:59 Solving for power
5:13 Solving without unit vectors
7:28 Finding our mistake
8:12 What does negative power mean?