Lesson 3.6 - Power
VIDEO LESSON (23:35 min)
Video is not accessible in some countries. If you cannot view it, you might need VPN to do so.DEFINITION
Power is the rate of doing work or transforming energy.
EXAMPLE PROBLEM #1
A runner does \( 4.6 \times 10^5 J of work in 12 minutes. How much power do they generate?SOLUTION:
EXAMPLE PROBLEM #2
A 45 kg student climbs a 3.2 m ladder against a wall at an angle of \( 80^o \) with respect to the ground. If he is able to climb it in 4.1 s, how much power is generated?SOLUTION:
EXAMPLE PROBLEM #2
An electric kettle generates 1200 W of energy. How long will it take to bring \( 5.0 \times 10^2 mL \) of water to a boil?SOLUTION:
END of LESSON
Last modified: Thursday, 19 March 2026, 1:43 PM