# btw ^ = squared by 2 does anyone know what this means in physics the formula W = 1/2 m (v^ - u^) what is m if w = 240 v = 6 and u = 4?

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btw ^ = squared by 2

does anyone know what this means,

in physics the formula W = 1/2 m (v^ - u^)

what is m if w = 240 v = 6 and u = 4

### 1 Answer

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- NCSLv 72 years agoFavourite answer
Just so you know, "^" does not mean "squared by 2".

"^" means "the following number is the exponent."

Then "^2" means "squared" or "raised to the second power,"

as in

E = mc^2

So your formula should read

W = ½m(v^2 - u^2)

which represents the fact that the work done on an object is equal to the change in its kinetic energy.

Assuming your values are in SI units, then,

240 = ½m*(6^2 - 4^2)

which solves to

m = 24 (kg)

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