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Physics Examples

$F = m a$

$F$	$=$	$?$
$m$	$=$	$20 kg$
$a$	$=$	$3 \frac{m}{s^{2}}$

Step 1

Substitute the given values into $F = m a$ .

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Step 1.1

Substitute $20 kg$ for $m$ .

$F = 20 kg a$

Step 1.2

Substitute $3 \frac{m}{s^{2}}$ for $a$ .

$F = 20 kg (3 \frac{m}{s^{2}})$

$F = 20.0 kg (3.00 \frac{m}{s^{2}})$

Step 2

Simplify the right side.

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Step 2.1

Combine fractions.

$F = 60.000 kg \frac{m}{s^{2}}$

Step 2.2

Combine $60.000 kg$ and $\frac{m}{s^{2}}$ .

$F = 60.000 \frac{kg m}{s^{2}}$

Step 2.3

Rewrite $\frac{kg m}{s^{2}}$ as $N$ .

$F = 60.000 N$

$F = 60.000 N$

Step 3

Round to $3$ significant figures.

$F = 60.0 N$

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$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$