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2 years ago

A horse runs 350 meters in 23 seconds. What was the average speed of the horse? Round your answer to a tenth

Physics

1 answer:

OLga [1]2 years ago

5 0

Answer:

Horse/Speed

55 mph

rounded to the tenth? either 60 or 50

but 350 would stay like that i believe!

Explanation:

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At the train station, you notice a large horizontal spring at the end of the track where the train comes in. This is a safety de

xxMikexx [17]

Answer:

v₀ = 9,798 ft / s

Explanation:

We can solve this problem with kinematics in one dimension, when the train stops the speed is zero, the acceleration is negative so that the train stops. Let's use the equation

v² = v₀² - 2 a d

v = 0

v₀ = √2 a d

In the problem it indicates that the acceleration is g / 2, we substitute

v₀ = √2 (g / 2) d

Let's calculate

v₀ = √ 2 32/2 3 = √32 3

v₀ = 9,798 ft / s

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3 years ago

What is the most important ability of plants? To photosynthesis To have a cell wall To produce Carbon dioxide

Dafna11 [192]

Answer:

oxygen

Explanation:

plants convert carbon dioxide into oxygen for animals to breathe in return we give the plants carbon dioxide.

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2 years ago

Which physical law underlies the first law of thermodynamics?

LenaWriter [7]

Answer:

Conservation of energy

Explanation:

The first law of thermodynamics is given by :

$Q=\Delta U+W$

Here,

Q is amount of heat added to the system

$\Delta U$ is change in internal energy

W is amount of work done by the system

It is clear that the energy can be neither created nor destroyed, it remains conserved. Hence, first law of thermodynamics shows that conservation of energy.

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3 years ago

With Christmas lights wired in series, if one light goes out, what happens to the rest?

daser333 [38]

Answer:

The ones that are after the light that went out are also out.

Explanation:

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2 years ago

Read 2 more answers

Students perform a set of experiments by placing a block of mass m against a spring, compressing the spring a distance x along a

Verizon [17]

Increasing the angle of inclination of the plane decreases the velocity of the block as it leaves the spring.

The statement that indicates how the relationship between v and x changes is; As x increases, v increases, but the relationship is no longer linear and the values of v will be less for the same value of x.

Reasons:

The energy given to the block by the spring = $\mathbf{0.5 \cdot k \cdot x^2}$

According to the principle of conservation of energy, we have;

On a flat plane, energy given to the block = $0.5 \cdot k \cdot x^2$ = kinetic energy of

block = $0.5 \cdot m \cdot v^2$

Therefore;

0.5·k·x² = 0.5·m·v²

Which gives;

x² ∝ v²

x ∝ v

On a plane inclined at an angle θ, we have;

The energy of the spring = $\mathbf{0.5 \cdot k \cdot x^2}$

The force of the weight of the block on the string, $F = m \cdot g \cdot sin(\theta)$

The energy given to the block = $0.5 \cdot k \cdot x^2 - m \cdot g \cdot sin(\theta)$ = The kinetic energy of block as it leaves the spring = $\mathbf{0.5 \cdot m \cdot v^2}$

Which gives;

$0.5 \cdot k \cdot x^2 - m \cdot g \cdot sin(\theta) = 0.5 \cdot m \cdot v^2$

Which is of the form;

a·x² - b = c·v²

a·x² + c·v² = b

Where;

a, b, and c are constants

The graph of the equation a·x² + c·v² = b is an ellipse

Therefore;

As x increases, v increases, however, the value of v obtained will be lesser than the same value of x as when the block is on a flat plane.

Please find attached a drawing related to the question obtained from a similar question online

The possible question options are;

As x increases, v increases, but the relationship is no longer linear and the values of v will be less for the same value of x

The relationship is no longer linear and v will be more for the same value of x

The relationship is still linear, with lesser value of v

The relationship is still linear, with higher value of v

The relationship is still linear, but vary inversely, such that as x increases, v decreases

Learn more here:

brainly.com/question/9134528

6 0

2 years ago

A horse runs 350 meters in 23 seconds. What was the average speed of the horse? Round your answer to a tenth ​

A horse runs 350 meters in 23 seconds. What was the average speed of the horse? Round your answer to a tenth