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3 years ago

Compare and contrast speed and velocity.

1 answer:

8 0

Speed is the time rate of an object moving from one place to another, while velocity is the rate and direction of the object's movement. They are very similar but they don't mean the same thing.

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3 years ago

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3 years ago

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Anyone can help?? I need it done before 9am please!!

Delicious77 [7]

Answer:

The answer is below

Explanation:

The equation for a linear line graph is given by:

y = mx + b, where y and x are variables, m is the slope of the graph and b is the y intercept (that is value of y when x is zero).

The slope (m) of a line passing through two points $(x_1,y_1)\ and\ (x_2,y_2)$ is given by:

$m=\frac{y_2-y_1}{x_2-x_1}$

A) The first line passes through the point (0, 0) and (10, 60). It is represented as (time, velocity). Hence the slope is:

$m=\frac{60 -0}{10-0}=6\ m/min^2$

B) The second line passes through the point (10, 60) and (15, 60). Hence the slope is:

$m=\frac{60 -60}{15-10}=0\ m/min^2$

C) The third line passes through the point (15, 60) and (40, -40). Hence the slope is:

$m=\frac{-40 -60}{40-15}=-4\ m/min^2$

D) The third line passes through the point (40, -40) and (55, 0). Hence the slope is:

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3 years ago

What color would a white ring buoy appear through blue plastic goggles?

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3 years ago

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point) A tank in the shape of an inverted right circular cone has height 5 meters and radius 4 meters. It is filled with 4 meter

zysi [14]

Answer:

W = 907963.50 J = 907.96 J

Explanation:

Note: Refer to the figure attached

Now, from the figure we have similar triangles ΔAOB and ΔCOD

we have

$\frac{5}{4}=\frac{x}{r}$

$r=\frac{4x}{5}$

Now, the work done to empty the tank can be given as:

$W = \int\limits^4_0 {(5-x)\rho\times g A} \, dx$

$W = \int\limits^4_0 {(5-x)1080\times 9.8 (\pi r^2)} \, dx$

$W = \int\limits^4_0 {(5-x)\times10584\times (\pi (\frac{4x}{5})^2)} \, dx$

$W = 6773.76\pi\int\limits^4_0 {(5-x)x^2)} \, dx$

$W = 6773.76\pi[\frac{5}{3}x^3-\frac{1}{4}x^4]^4_0$

$W = 6773.76\pi[\frac{128}{3}]$

W = 907963.50 J = 907.96 J

7 0

3 years ago

Compare and contrast speed and velocity.​

Compare and contrast speed and velocity.