A car accelerates uniformly from +10.0 m/s to +40.0 m/s over a distance of 125 m. How long did it take to go that distance? Show all your work, including the equation used, given and unknown quantities, and any algebra required. Make sure your answer has the correct number of significant figures.

Answers

Answer 1

Answer:

The time of motion of the car to the given distance is 5 seconds.

The given parameters;

initial velocity of the car, u = 10 m/s
final velocity of the car, v = 40 ms/
distance traveled by the car, s = 125 m

The time of motion of the car to the given distance is determined by applying average velocity formula as shown below;

$s = ((u+ v)/(2) )t\n\n125 = ((10 + 40)/(2) )t\n\n125 = 25t\n\nt = (125)/(25) \n\nt = 5 \ s$

Thus, the time of motion of the car to the given distance is 5 seconds.

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Answer 2

Answer:

Answer:

Explanation:

$v^2-u^2=2as\n40^2-10^2=2a*125\n1600-100=250a\na=(1500)/(250)=6~m/s^2\nv=u+at\n40=10+6t\n6t=30\n t=(30)/(6)=5 ~s$

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Answers

Answer:

Distance covered by B is 4 times distance covered by A

Explanation:

For an object in free fall starting from rest, the distance covered by the object in a time t is

$s=(1)/(2)gt^2$

where

s is the distance covered

g is the acceleration due to gravity

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In this problem:

- Object A falls through a distance $s_A$ during a time t, so the distance covered by object A is

$s_A=(1)/(2)gt^2$

- Object B falls through a distance $s_B$ during a time 2t, so the distance covered by object B is

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So, the distance covered by object B is 4 times the distance covered by object A.

Electrically charged flares that arch up from the Sun are known as _______.

Answers

Electrically charged flares that arch up from the Sun are known as the solar flare or solar prominence. The Solar flare is the sudden brightness of the Sun near its surface. It is mostly accompanied by coronal mass ejection.

Answer:

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Explanation:

Why is freshly distilled or deionized water used in this standardization?

Answers

Answer:

The amount of carbon dioxide is little in deionized water.

Explanation:

Deionized water is a water with little or no impurities. Impurities are in waters are not able to boil below or above the boiling point of water,and in this case are been retained in the original container.

Answer:

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Explanation:

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Answers

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How to covert ma into amphere?

Answers

1 ampere = 1,000 milliamperes

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Answers

Answer: The correct answer is B.

Explanation:

"Cumulative" means that something builds on itself. Like one law is formulated from using the result of the other.

Newton's law of gravity had come after that Kepler's laws was formulated.

The law of gravity is more fundamental than Kepler's laws.

Newton formulated his famous law of gravitation between the earth and the moon and also between the Sun and the planet.

After that Kepler's laws came. He gave the law of orbit in which he said that the planet revolves the Sun in an eliiptical orbit. And the other two laws were also given by him. In this way Kepler's law was formulated by using the law of gravity.

Therefore, Kepler based his laws of planetary motions off of Newton’s law of gravity is the best example to show how scientific knowledge is cumulative.

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