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If a force of 20 N is applied to an object with a mass of 3 kg, the object will accelerate at m/s2

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If a force of 20 N is applied to an object with a mass of 3 kg, the object will accelerate at m/s2

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What force would be required to accelerate a 1,100 kg car to 0.5m/s2

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What force would be required to accelerate a 1,100 kg car to 0.5m/s2

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A motorist drives along a straight road at a constant speed of 15.0 m/s. Just as she passes a parked motorcycle police offi cer, the offi cer starts to accelerate at 2.00 m/s2 to overtake her. Assuming that the offi cer maintains this acceleration, (a) determine the time interval required for the police offi cer to reach the motorist. Find (b) the speed and (c) the total displacement of the offi cer as he overtakes the motorist.

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Answer:

a) The time the police officer required to reach the motorist was 15 s.

b) The speed of the officer at the moment she overtakes the motorist is 30 m/s

c) The total distance traveled by the officer was 225 m.

Explanation:

The equations for the position and velocity of an object moving in a straight line are as follows:

x = x0 + v0 · t + 1/2 · a · t²

v = v0 + a · t

Where:

x = position at time t

x0 = initial position

v0 = initial velocity

t = time

a = acceleration

v = velocity at time t

a)When the officer reaches the motorist, the position of the motorist is the same as the position of the officer:

x motorist = x officer

Using the equation for the position:

x motirist = x0 + v · t (since a = 0).

x officer = x0 + v0 · t + 1/2 · a · t²

Let´s place our frame of reference at the point where the officer starts following the motorist so that x0 = 0 for both:

x motorist = x officer

x0 + v · t = x0 + v0 · t + 1/2 · a · t²      (the officer starts form rest, then, v0 = 0)

v · t = 1/2 · a · t²    

Solving for t:

2 v/a = t

t = 2 · 15.0 m/s/ 2.00 m/s² = 15 s

The time the police officer required to reach the motorist was 15 s.

b) Now, we can calculate the speed of the officer using the time calculated in a) and the  equation for velocity:

v = v0 + a · t

v = 0 m/s + 2.00 m/s² · 15 s

v = 30 m/s

The speed of the officer at the moment she overtakes the motorist is 30 m/s

c) Using the equation for the position, we can find the traveled distance in 15 s:

x = x0 + v0 · t + 1/2 · a · t²

x = 1/2 · 2.00 m/s² · (15s)² = 225 m

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Hurry help me !!! Species are disappearing at an accelerating rate through human action, primarily habitat destruction but also pollution and the introduction of exotic species into residual natural environments. I have said that a fifth or more of the species of plants and animals could vanish or be doomed to early extinction by the year 2020 unless better efforts are made to save them. . . . As the last forests are felled in forest strongholds like the Philippines and Ecuador, the decline of species will accelerate even more. In the world as a whole, extinction rates are already hundreds or thousands of times higher than before the coming of man. They cannot be balanced by new evolution in any period of time that has meaning for the human race. What message does the author convey in this excerpt? Humans need to take action to end further destruction of the natural environment. In the coming years, humans will put forth stronger efforts to save plants and animals. The extinction of plant and animal species is problematic in the Philippines and Ecuador. In recent years, the extinction rate for many animal species has significantly increased.

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Hey there!

Correct answer is D. Comma or Period Inside Rule

A. Question mark or exclamation point inside: those are not really necessary.

B. Colon or semicolon: not, a semicolon would divide the whole sentence and it would be shorten; a colon would work but after requested, when there is already a comma.

C. Question mark or Exclamation Point Outside Rule: would not work, becase it is an very polite and affirmative sentence.

D: A comma or period inside rule: actually, just a comma would work. Please, Cooper’s dad requested, go… Cooper’s dad requested must be in between commas as it is a vocative.

Hope this helps

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Trump Accelerate US Embassy to Israel

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Trump Administration Accelerating Israeli Embassy Move

Donald John Trump born in 14th June 1946 is the 45th and current president of America since 20th January 2017. Before president he was a businessman. According to Forbes magazine, he was the world’s 544th richest person as of May 2017, with an estimated net worth of $3.5 billion.

Trump Accelerate US Embassy to Israel

Till the time trump started his president ship he is being criticized because of his many policies related to country’s interest. One of his policy which he was about to implement but before implementation of this policy it is too much in critics in all of his management team and overall the world infect which is “Moving U.S Embassy to Israel”. Trump keeps on his decision whether they are wrong for others for state even he has a motto “I wanted to do it and I will do it”. When he get elected by people he said them that I will do everything which would be only beneficial for the country America and he thinks that moving our U.S embassy to move to Israel. Trump thinks that this decision will enhances the relationship between these two countries strong. He has made Jerushilm the capital of Israel before ordering the relocation of U.S Embassy there. This decision of trump has disturbed the peace and comfort level of not only of American white house, Americas parliament and other politicians authorizations this decision also disturbed the other states policies and strategies for their states and countries because it had never been happened before that Israel is going to be a place for someone’s embassy because it had security issues which is the big problem for having an embassy there. This decision of trump is not also being accepting by other peaceful states who has linked with America in terms off aid or any other terms mostly countries are linked with America in terms of transferring technologies, transferring food and beverages items in terms of shortage air wrong growth, in terms of needing clothing, transportation needs, exports and imports of valuable items, most of the countries even share the methods of teaching of America as well as the course outline of the state because of great worth of his course outline whole around the world specially in the countries who are less developed and less populated, has less resources to survive best in the society they mostly depends on the America for aid and help. This moving decision of trump is declared so much wrong because in this decision many of his parliament leaders didn’t signed the agreement bur trump will implement it whether any one sprees or not. Other than trump’s decision no other country has an embassy in Israel due to high security risk for his employees who work there. One more important thing is that Israel annexed east Jerusalem, which contains most of the important holy sites of MUSLIMS, Jews and Christians as well after the war with Arab in 1967. This also creates a dark image of Israel’s administration. Trump’s administration use to give an explanation on this decision that we are not finding any prospective location for U.S embassy which they are shifting from Tel Aviv due to security risk. This decision is in just papers by the time which are signed by the president and it will take 3 to 4 years to move because this decision has many critics and controversies in it which take too much time to be resolved from other states also because this is not a single person decision or not a single person’s work to move to there.



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