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4 years ago

Sierra did 500J of work to move her couch. If she exerts 250N of force on the couch, how far did she move?

Physics

1 answer:

Orlov [11]4 years ago

4 0

2m would be the answer. She moved it 2m

Hope that helped, Good luck! (:

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2. A jack exerts a vertical force of 4.5 X 103

skad [1K]

Correct Question:-

A jack exerts a vertical force of 4.5 × 10³

newtons to raise a car 0.25 meter. How much

work is done by the jack?

$\\ \\$

Given :-

$\star \sf \small force = 4.5 \times {10}^{3} \: newton$

$\star \sf \small distance = 0.25 \: meter$

$\\ \\$

To find:-

$\sf \star \: work = \: ?$

$\\ \\$

Solution:-

we know :-

$\bf \dag \boxed{ \rm work = force \times distance}$

$\\ \\$

So:-

$\dashrightarrow \sf work = force \times distance$

$\\ \\$

$\dashrightarrow \sf work = (4.5 \times 1 {0}^{3} ) \times 0.5 \\$

$\\ \\$

$\dashrightarrow \sf work = (4.5 \times 1 {0}^{3} ) \times \frac{0 \cancel.5}{10} \\$

$\\ \\$

$\dashrightarrow \sf work = (4.5 \times 1 {0}^{3} ) \times \frac{5}{10} \\$

$\\ \\$

$\dashrightarrow \sf work = (4.5 \times 1 {0}^{3} ) \times \cancel \frac{5}{10} \\$

$\\ \\$

$\dashrightarrow \sf work = \dfrac{4\cancel.5}{10} \times 1 {0}^{3} \times \dfrac{1}{2} \\$

$\\ \\$

$\dashrightarrow \sf work = \dfrac{45}{10} \times 1 {0}^{3} \times \dfrac{1}{2} \\$

$\\ \\$

$\dashrightarrow \sf work = \dfrac{45}{10 {}^{0} } \times 1 {0}^{3 - 1} \times \dfrac{1}{2} \\$

$\\ \\$

$\dashrightarrow \sf work = \dfrac{45}{10 {}^{0} } \times 1 {0}^{2} \times \dfrac{1}{2} \\$

$\\ \\$

$\dashrightarrow \sf work = \dfrac{45}{1} \times 1 {0}^{2} \times \dfrac{1}{2} \\$

$\\ \\$

$\dashrightarrow \sf work = \dfrac{45 \times 10 \times \cancel{10}}{ \cancel2} \\$

$\\ \\$

$\dashrightarrow \sf work = \dfrac{45 \times 10 \times 5}{ 1} \\$

$\\ \\$

$\dashrightarrow \sf work =225 \times 10$

$\\ \\$

$\dashrightarrow \bf work =\red{2250\: joule}$

5 0

3 years ago

Two dogs are pulling on a rope in opposite directions. The dog in the left pulls with a force of 10 N, while the dog in the righ

hodyreva [135]

Answer:

Dog on the right.

Explanation:

Dog on the left is pulling 10N. The dog on the right is pulling at 12N. So the dog on the right is pulling more. Hope this helps :)))

4 0

3 years ago

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Plz help i need answers to all these questions

Eduardwww [97]

Answer:

1) The net force is 5 N. The box is accelerating 10 m/s

2) The net force is 6.986 N. It is accelerating. Normal Force is 16.986

Explanation:

1) 20 N forward - 15 N backwards = a net force of 5 N

Acceleration: Acceleration = Net Force * Mass ( derived from Force = mass * acceleration).

a = 5 N / 2 kg

a= 2.5 m/s^2

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3 years ago

If the distance from a converging lens to the object is less than the focal length of the lens, the image will be _______ the ob

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<span>virtual, upright, and larger than. just took the test

</span>

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4 years ago

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Which statement best describes the difference between acceleration and velocity?

Sloan [31]

C. is the answer because acceleration is the change in velocity in time while velocity is speed with a direction

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3 years ago