# Physics Examples

Step 1

Step 1.1

Substitute for .

Step 1.2

Substitute for .

Step 2

Step 2.1

Cancel the common factor of and .

Step 2.1.1

Factor out of .

Step 2.1.2

Cancel the common factors.

Step 2.1.2.1

Factor out of .

Step 2.1.2.2

Cancel the common factor.

Step 2.1.2.3

Rewrite the expression.

Step 2.2

Multiply by .

Step 2.3

Rewrite as .

Step 2.4

Factor out of .

Step 2.5

Combine fractions.

Step 2.6

Divide by .

Step 2.7

Cancel .

Step 2.7.1

Cancel .

Step 2.7.2

Rewrite the expression.

Step 2.8

Cancel .

Step 2.9

Rewrite the expression.

Step 3

Round to significant figures.