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3 years ago

If it takes 1,800 foot- pounds of work to push a rock fifteen feet, what amount of force was used?

Mathematics

1 answer:

ella [17]3 years ago

6 0

Answer:

120 lbs

Step-by-step explanation:

Work = force * distance

1800 ft-lb = force * 15 ft

force = 1800 ft-lb / 15 ft

=1800/15 ft-lb/ft

=120lbs

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Andrews [41]

1) $\frac{1}{2}\,X\,\frac{3}{7}$ = $\frac{3}{14}$

2) $\frac{1}{3}\,X\,\frac{3}{7}$ = $\frac{1}{7}$

3) $1.5 \times 3.7\\$ = $5.55$

Step-by-step explanation:

We need to solve following expressions.

1) $\frac{1}{2}\,X\,\frac{3}{7}$

We need to multiply numerator with numerator and denominator with denominator

Solving:

$\frac{1}{2}\,X\,\frac{3}{7}\\=\frac{3\,X\,1}{2\,X\,7}\\=\frac{3}{14}$

It cannot be further simplified so, $\frac{1}{2}\,X\,\frac{3}{7}$ = $\frac{3}{14}$

2) one third of 3/7

one third stands for 1/3

Now solving:

$\frac{1}{3}\,X\,\frac{3}{7}$

We need to multiply numerator with numerator and denominator with denominator

$\frac{1}{3}\,X\,\frac{3}{7}\\=\frac{3\,X\,1}{3\,X\,7}\\=\frac{3}{21}\\=\frac{1}{7}$

It cannot be further simplified so, $\frac{1}{3}\,X\,\frac{3}{7}$ = $\frac{1}{7}$

3) $1.5 \times 3.7\\$

In this question we have to multiply 1.5 with 3.7

$1.5 \times 3.7\\=5.55$

So, $1.5 \times 3.7\\$ = $5.55$

Learn More:

You can find more information about multiplication of fractions at:

brainly.com/question/2456302

brainly.com/question/2166248

Keywords: fractions, multiplication

#learnwithBrainly

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