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mamaluj [8]
4 years ago
9

the four forces shown have the same strength. which force would be most effective in opening the door?

Physics
1 answer:
Umnica [9.8K]4 years ago
4 0
Hey There! According to science, if the same forces are applied, than the door will not move due to similar strength. So, regardless the door won't move. Have A Brainly Day!
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We will have the following:

First, the equation to use is the following:

d=v_ot+\frac{1}{2}at^2

Now, we transform the total distance the cat would need to travel:

90\operatorname{cm}+60\operatorname{cm}=150\operatorname{cm}\cdot\frac{1m}{100\operatorname{cm}}=1.5m

So, the cat would need to travel 1.5 meters. ("d" in the equation).

Now, using the speed given we determine the time it would take the cat to traverse the 1.5 meters:

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Now, we know that the acceleration will be given by Earth's gravity, so:

1.5m=v_0(\frac{10}{3}s)+\frac{1}{2}(-\frac{9.8m}{s^2})(\frac{10}{3}s)^2\Rightarrow1.5m=v_0(\frac{10}{3}s)+(-\frac{490}{9}m)\Rightarrow\frac{1007}{18}m=v_0(\frac{10}{3}s)\Rightarrow v_0=\frac{1007}{60}\frac{m}{s}\Rightarrow v_0=16.78333\ldots

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2 years ago
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Therefore, the height of the tank is:

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3 years ago
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Answer:

The time is 5.71 sec.

Explanation:

Given that,

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The correct answer is A continúe moving with constant velocity

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