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2 years ago

A ball is dropped from a helicopter 100m from the ground. As the ball falls, the magnitude of it's associated velocity is

Mathematics

1 answer:

kotegsom [21]2 years ago

5 0

As the ball falls, the velocity of the ball increases with increase in distance

<h3>Velocity and Motion</h3>

Given Data

Distance = 100m

It should be noted that when an object falls, it velocity increases from zero to the maximum just before it hits the ground from the initial point of lunch.

Note: For a projectile the ball might reach a zero velocity at maximum height

Learn more about velocity here:

brainly.com/question/25705666

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Solve for x <img src="https://tex.z-dn.net/?f=%5Csqrt%7B3x%2B13%7D%3D2x-3" id="TexFormula1" title="\sqrt{3x+13}=2x-3" alt="\sqrt

ivanzaharov [21]

Answer:

x=13

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

(a^3+a^2b/5a)(25/3b+3a)

zheka24 [161]

Answer:

$\frac{5a}{3}$

Step-by-step explanation:

The given expression is;

$(\frac{a^3+a^2b}{5a})(\frac{25}{3b+3a} )$

Factorize;

$(\frac{a^2(a+b)}{5a})(\frac{25}{3(b+a)} )$

Cancel out the common factors;

$(\frac{a(1)}{1})(\frac{5}{3(1)} )$

Simplify;

$\frac{5a}{3}$

5 0

3 years ago

Read 2 more answers

a street light is at the top of a 18 ft tall pole. a woman 6 ft tall walks away from the pole with a speed of 4 ft/sec along a s

shutvik [7]

The most appropriate choice for similarity of triangles will be given by -

Speed of tip of the shadow of woman = 6 ft/s

What are similar triangles?

Two triangles are said to be similar, if the corrosponding angles of the triangles are same and the corrosponding sides of the triangles are in the same ratio.

Here,

The diagram has been attached here

Let the distance of woman from the pole be x ft and the distance of tip of the shadow to the pole be y ft.

Height of street light = 18 ft

Height of woman = 6ft

The two triangles are similar [As height of woman is parallel to the height of pole]

$\frac{y - x}{6}=\frac{y}{18}\\18y - 18x = 6y\\18y - 6y = 18x\\12y = 18x\\y = \frac{18}{12}x\\y = \frac{3}{2}x\\$

To find the speed, we have to differentiate both sides with respect to time 't'

$\frac{dy}{dt} =\frac{3}{2}\frac{dx}{dt}\\\frac{dy}{dt}=\frac{3}{2} \times 4\\\frac{dy}{dt} = 6$

Speed of tip of her shadow = 6 ft

To learn more about similarity of triangles, refer to the link-

brainly.com/question/14285697

#SPJ4

6 0

1 year ago

a board that is 12 feet long is to be cut into five pieces of equal length. how long will each piece of wood be?

Arte-miy333 [17]

Answer:

2.4 feet long

Step-by-step explanation:

12/5, 12 feet long divided by 5 feet

3 0

3 years ago

Read 2 more answers

At noon joyce drove to the lake at 30 mph, but she made the long walk back home at 4 mph. how many hours did she walk if she was

lina2011 [118]

By definition we have the following equation:
t = d / v
Where,
t: time
d: distance
v: speed
For this case we have:
d / 30 + d / 4 = 17
Rewriting we have:
2d + 15d = 17 (60)
17d = 17 (60)
d = 60 mi
Then, the walking time is
t = d / v
t = 60/4
t = 15 hours
Answer:
She walked
t = 15 hours

4 0

3 years ago