Power - IB Physics

Power is the rate of change of energy per time, or P = ΔE/t. It's measured in units of Watts or W, which are really Joules per second or J/s. In this video I go over the basic definition and give three examples of using power to solve problems.

0:00 Definition
1:10 Example Problem 1
1:58 Example Problem 2
3:02 Example Problem 3
4:29 P = Fv

[rishabjayaraman]

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[daphnegomezescudero]

your account is truly lifesaving. thank you!

[AdrianTangMusic]

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[lilyli]

Thank you for your awesome videos!!!

For example 2 when I get acceleration by doing (20-0)/(4-0) = 5, then use P = Fv for the answer I get 10, 000 J. Can anyone help me out?

[harshakatta]

for problem number 3 how we know it moved 5m it could move 1m and the velocity could still be 5 m/s

[lilyli]

thanks for your awesome videos!!!

For example 2 when I get acceleration by doing 20/4, then get power using p=fv, the answer I get is 10, 000J. Can anyone help me out?