An Olympic sprinter can go from a state of rest to 11 meters per second in 10 seconds. What is the average acceleration of the sprinter?

Answers

Answer 1

Answer: The sprinter accelerates at 1.1 meter per second.

Related Questions

Challenge: Some but not all of the gasoline used by car's enegine is transformed into kinetic energy. Where might some of the energy go in this system?
The reflection of light waves from a rough surface is called _____ reflection.a. diffuse c. regular b. scattered d. fragmented
What is the mechanical advantage of the lever shown below?
About half of the electricity in the United States comes from burning _____. coal oil natural gas methane
I need these ASAP Thank you c:1) The outer electrons in an element are referred to as _____. A) valence electrons B) ground state electrons C) excited electrons D) none of the above 2)In an exothermic reaction, the products have _____. A) more energy than the reactants B) less energy than the reactants C) the same amount of energy as the reactants 3)A static charge is different from an electric current, in that a static charge _____. A) is a flow of electrons B) lasts only for a fraction of a second C) occurs because a force is exerted on the electrons D) involves the movement of ions as well as electrons 4)The time that it takes for a wave to travel one wavelength is considered a(n) _____. A) period B) velocity C) amplitude D) rarefaction (This is for Integrated Physics and Chemisty)

What is the minimum coating thickness (but not zero) that will minimize the reflection at the wavelength of 705 nm where solar cells are most efficient?

Answers

Answer:

d = 235 nm.

Explanation:

Let the layer be of glass. Refractive index of glass μ = 1.5. Let the required thickness be d.

For minimum reflection , that is destructive interference in thin films , the condition is

2μd = λ ( for first order)

d = 705 / 2 x 1.5 = 235 nm [ λ =705 nm ]

A physical science test book has a mass of 2.2 kg what is the weight on mars??? please help

Answers

Weight is defined as a body's mass multiplied by its acceleration due to gravity.

Test Book's weight on mars = 8.1 N.

What is different between mass and weight?

The distinction between Mass and Weight is Weight is a measure of force, while mass is a measure of inertia. Many people use these two terms interchangeably.
The mass of a body is the amount of matter contained within it, whereas the weight of a body is the force acting on it as a result of gravity's acceleration. In chemistry, this is the primary distinction between mass and weight.
Weight is defined as a body's mass multiplied by its acceleration due to gravity.

Weight = (mass) x (gravity)

= (2.2 kg) x (3.7 m/s^2)

= 8.1 newtons

To learn more about : Mass

Ref : brainly.com/question/25623677

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All of the earth's life and weather exists within the stratosphere.
a. True
b. False

Answers

The statement “All of the earth's life and weather exists within the stratosphere” is absolutely false. Thus, the correct option for this question is B.

What is Stratosphere?

Stratosphere may be defined as the second layer of the atmosphere as you go upward. It is the layer of the earth's atmosphere above the troposphere. Apart from this, it significantly extends to about 50 km above the earth's surface.

According to the context of this question, the correct and absolute answer is the troposphere. It is the first layer that is where we are able to do most of our activities. This is where we can see the formation of clouds, and the production of rain, hail, snow, and other weather phenomenon.

The troposphere is essential as it contains the Earth's weather as well as greenhouse gases to maintain the temperature on Earth. The troposphere is the lowest layer of Earth's atmosphere. Most of the mass (about 75-80%) of the atmosphere is in the troposphere. Most types of clouds are found in the troposphere, and almost all weather occurs within this layer.

Therefore, the statement “All of the earth's life and weather exists within the stratosphere” is absolutely false. Thus, the correct option for this question is B.

To learn more about Troposphere, refer to the link:

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The statement “All of the earth's life and weather exists within the stratosphere” is false. The answer is letter B. The answer is the troposphere. The first layer, troposphere, is where we are able to do most of our activities. This is where we can see the formation of clouds, the production of rain, hail, snow and other weather phenomenon. Also, this layer is where the greatest amount of air pressure because most of the molecules of air are in this area. Like us, air has also mass and the pressure is brought down by the earth’s gravity causing an increase in weight exerted on you as you descend lower into the atmosphere. So, as you enter into the other layers of atmosphere above the troposphere, the air pressure starts to decrease. Below the atmosphere is the hydrosphere. This is where all liquid forms are located. And since the seawater has a greater mass than air, it has the greatest pressure.

Wich is a scalar quantity
(1)velocity (2)speed (3)acceleration (4) displacement

Answers

Speed is the only one on the list
that doesn't have a direction.

As the speed of a fluid increases, ____.a. the pressure decreases
c. the force decreases
b. the pressure increases
d. the volume decreases

Answers

The correct answer for the question that is being presented above is this one: "a. the pressure decreases." As the speed of a fluid increases, the pressure decreases." The relationship of the speed and the pressure is inversely proportional. As the pressure increases, the speed decreases.

Answer:

a. the pressure decreases

Explanation:

If we assume here the flow of the fluid to be ideal flow such that there is no viscous loss in the fluid then in this case we can say that Bernoulli's theorem is valid here.

so here we can say

$P + \frac{1]{2}\rho v^2 = constant$

now here from above equation we can say that sum of pressure and kinetic energy of fluid will remain constant always

Now if speed of flow of the fluid is increased then to sum remain constant in ideal flow the pressure must have to decrease here.

so correct answer would be

a) the pressure decreases

A 0.145-kg baseball pitched at 37.5 m/s is hit on a horizontal line drive straight back toward the pitcher at 57.0 m/s . If the contact time between bat and ball is 2.50×10−3 s , calculate the average force between the ball and bat during contact.