Question

I need help!!!!
The general formula for kinetic energy is k = 0.5mv2 where k = kinetic energy, m = mass, and c = velocity. Solve k = 0.5mv2 for v

Answer 1

here are the options

Answer 2

k = (1/2) m v^2

solve for v. start by solving for v^2 — divide both sides by (1/2) and m...what do you get?

Answer 3

(remember that dividing by 1/2 is like multiplying by 2)

Answer 4

i don't know????

Answer 5

what is k divided by 1/2?

Answer 6

k2?

Answer 7

yes, 2k. now divide that by m, what do you get?

Answer 8

m2??

Answer 9

2k divided by m is going to have a 2, a k, an m, and a division symbol (/).
you arrange them...

Answer 10

how do you write 3 divided by 4?

Answer 11

3/4

Answer 12

right. so how would you write 2k divided by m?

Answer 13

2k/m

Answer 14

right!!

okay, so now we have

v^2 = 2k/m

but we want to solve for v. any ideas what to do next?