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3 years ago

9

An object moves +4 m/s for one minute. Then it turns around and moves -4 m/s. What had to change during the time the object reve

rsed its direction?

2 answers:

ArbitrLikvidat [17]3 years ago

6 0

Answer:

Its velocity has changed as it turned velocity would be known as a change of direction

Explanation:

shusha [124]3 years ago

3 0

The answer will be 0

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A sample of hydrogen gas was collected over water. If the total pressure

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3 years ago

What is the area of triangle ABC with vertices A(x¹,y¹), B(x²,y²)and C (x³,y³)??????????<br>

AlexFokin [52]

Answer:

$Area = \frac{1}{2}|x_1(y_2 - y_3)+x_2(y_3 - y_1)+x_3(y_1 - y_2)|$

$Area = 2\ units^2$

Explanation:

Given

$A = (x_1,y_1)$

$B = (x_2,y_2)$

$C = (x_3,y_3)$

Required

Determine the area

The area of a triangle is :

$Area = \frac{1}{2}|A_x(B_y - C_y) + B_x(C_y - A_y) + C_x(A_y - B_y)|$

By substituting values for the x and y coordinates of A, B and C;

We have:

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So:

For instance

$A = (0,3)$

$B= (2,1)$

$C = (2,3)$

The area is:

$Area = \frac{1}{2}|0(1-3) + 2(3-3) + 2(3-1)|$

$Area = \frac{1}{2}| 2*0 + 2*2|$

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2 years ago

Which unit conversion allows you to convert 21.0 gallons into milliliters?

Ulleksa [173]

Answer:

Explanation:

we are given

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we can see that there are two non-zero places after decimals

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we know that

1 gallon = 4 quarts

so, we can write as

step-2: Change into liter

we know that

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or

step-3: Change into millilitre

we know that

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...................Answer

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2 years ago