Complete question :
A driver of a car moving with speed 90km/h saw a child on the road 25m ahead of him .he jammed on the brake and bought the car to rest. Calculate the time taken to bring the car to rest and retradation of the car.
Answer:
t = 2 seconds ; retradation = - 12.5 m/s²
Explanation:
Given that :
Final velocity v = 0
Initial Velocity u = 90 km /hr = (90 * 1000)m / 3600s = 90000m/3600s = 25m/s
Distance = 25 m
Using the relation :
v² = u² + 2aS
where, S = distance covered a = retradation
0 = 25² + 2a(25)
0 = 625 + 50a
50a = - 625
a = - 12.5 m/s²
Time taken (t) :
Using :
v = u + at
0 = 25 + (-12.5 * t)
0 = 25 - 12.5t
12.5t = 25
t = 25 / 12.5
t = 2 seconds
Isolationism.
This is a theory that a nation's best interest is by keeping the affairs of other countries at a distance.
Decision of a new state can be admitted to the Union is decided by <u>the Congress.</u>
<h3>Further explanation</h3>
The Congress is the legislative branch of the United States government. This country is one example of a country that adopts a bicameral or two-chamber system. Bicameral means the legislature consists of the Senate and the House of Representatives. The House of Representatives consists of 435 members, each represents the district and participates for two years, while the Senate from each state only has two Senators. Both members of the House of Representatives and members of the Senate are elected by the community directly. Although in some cases of several states, the governor can take part in choosing a temporary senate.
Based on Article IV, Section 3 of the U.S. Constitution, only Congress has the authority to accept and ratify the membership of the new state in the Union. The same rule explained that there is a prohibition in forming new states from other regions without the approval of Congress. The same prohibition applies to the joining of two or more countries, without the approval of Congress.
<h3>Learn more</h3>
- How do the U.S. Congress work: brainly.com/question/3217978
- Ratification of the U.S. Constitution: brainly.com/question/1218366
- The benefits of the bicameral system: brainly.com/question/4241568
<h3>Answer details</h3>
Subject: History
Chapter: The United States Constitution
Keywords: the Congress of the United States, the bicameral system, senators, the role of Congress, the admission of new state
