Question

Imagine a 10 kg block moving with a velocity of 20 m/s to the left. Calculate the kinetic energy of this block

Answer 1

Use the formula for kinetic energy...

Answer 2

200? @agent0smith

Answer 3

I'm lost in this subject :(

Answer 4

I didn't work it out. Show your work.

Answer 5

And show units.

Answer 6

@agent0smith 0.5 * 10kg * 20^2 ?

Answer 7

Yes. Don't forget units in your result.

Answer 8

@agent0smith Thank you! Can you help me with another?

Answer 9

Sure

Answer 10

If a 50 kg student is standing on the edge of a cliff. Find the student’s gravitational potential energy if the cliff is 40 m high.

Answer 11

@agent0smith PE is confusing to me. I don't get it as easily, so this is a little more difficult

Answer 12

It's a simple formula for PE

Answer 13

How is it confusing?

Answer 14

19600? @agent0smith

Answer 15

Again, show your work.

Answer 16

And again, units.

Answer 17

50 kg * 9.8 N * 40 m = 19600 m2 kg2 / s2 ?

Answer 18

@agent0smith

Answer 19

PE has the same units as KE...