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nevsk [136]
3 years ago
7

Most South American countries got their independence between:

Geography
2 answers:
Sonja [21]3 years ago
7 0

Answer:

It should be b

Explanation:

I took the test

Lelu [443]3 years ago
4 0

Answer:

B. 1800 and 1821.

<em>good luck, i hope this helps :)</em>

<em />

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What acceleration is produced when a 3,000-N force acts on a 1,200-kg car?Ignore the friction
Tju [1.3M]

Answer: 2.5\frac{m}{s^{2}}


According to Newton's 2nd Law of Motion (in the specific case when the mass m <u>is constant</u>) the acceleration a that a body acquires is directly proportional to the exerted force F on the body.

As shown in the following equation:


F=ma    (1)


We already know the value of the mass of the car and the force excerted on it. So, we need to find the value of the acceleration from equation (1):


a=\frac{F}{m}     (2)


And substitute the known values:


a=\frac{3000N}{1200kg}    


At this point, note that 1N=1kg\frac{m}{s^{2}}


Taking this into account, the acceleration of the car is:


a=2.5\frac{m}{s^{2}}



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