1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AlekseyPX
3 years ago
15

A 124-kg balloon carrying a 22-kg basket is descending with a constant downward velocity of 24.3 m/s . A 1.0-kg stone is thrown

from the basket with an initial velocity of 12.9 m/s perpendicular to the path of the descending balloon, as measured relative to a person at rest in the basket. That person sees the stone hit the ground 11.8 s after it was thrown. Assume that the balloon continues its downward descent with the same constant speed of 24.3 m/s .
Required:
a. How high was the balloon when the rock was thrown out?
b. How high is the balloon when the rock hits the ground?
c. At the instant the rock hits the ground, how far is it from the basket?
d. Just before the rock hits the ground, find its horizontal and vertical velocity components as measured by an observer at rest in the basket.
e. Just before the rock hits the ground, find its horizontal and vertical velocity components as measured by an observer at rest on the ground.
Physics
1 answer:
defon3 years ago
8 0

Answer:

-969.06

-286.74

698.7

-115.6, 12.9

-139.9, 12.9

Explanation:

Given that

Speed v, wrt y = -24.3 m/s

Speed v, wrt x = 12.9 m/s

time t, = 11.8 s

a

Using the formula

H(t) = ut - 1/2gt², where u = v wrt y

H(t) = -24.3 * 11.8 - 1/2 * 9.8 * 11.8²

H(t) = -286.74 - 682.28

H(t) = -969.06 m

b

H = ut, where u = v wrt y

H = -24.3 * 11.8

H = -286.74 m

H(1) = -969.06 - -286.74 = -682 m

c

Horizontal displacement, x = vt. Where v = v wrt x

x = 12.9 * 11.8

x = 152.22 m

d = √(H1² + x²)

d = √682² + 152²

d = 465124 + 23104

d = √488228

d = 698.7 m

d

Vertical component =

-gt - 0 =

-9.8 * 11.8 = -115.6

Horizontal component =

v wrt x - 0

12.9 - 0 = 12.9

e

Vertical component =

-gt - v wrt y =

-9.8 * 11.8 - 24.3 = -139.9

Horizontal component =

v wrt x - 0 =

12.9 - 0 = 0

You might be interested in
1. When asteroids collided some of the broken materials fall into Earth's orbit. What do
Kazeer [188]
I believe it is meteoroids
6 0
3 years ago
Read 2 more answers
A total charge of –6.50 µC is uniformly distributed within a sphere that has a radius of 0.150 m. What is the magnitude and dire
Marrrta [24]

Answer:

A) 2.89 × 105 N/C, radially inward

Explanation:

The magnitude of the electric field generated by a charged sphere is given by the following formula:

E=k\frac{Q}{r^2}  ( 1 )

k: Coulomb's constant = 8.98*10^9 Nm^2/C^2

Q: charge of the sphere = -6.50*10^-6 C

r: distance from the center of the sphere to the point in which E is calculated

r = 0.150m + 0.300m = 0.450 m

You replace the values of Q and r in the equation (1):

E=(8.98*10^9Nm^2/C^2)\frac{6.50*10^{-6}C}{(0.450m)^2}=288246.91\frac{N}{C}\\\\E\approx2.89*10^5\frac{N}{C}

The electric field points radially inward because the charge is negative.

hence, the answer is:

A) 2.89 × 105 N/C, radially inward

7 0
4 years ago
A small cart travels 20 meters to the right in 10 seconds calculate the velocity
stira [4]
The velocity would be 10
3 0
3 years ago
The 0.41-kg cup of a James Bond anti-Martini-Maker is attached to a spring of spring constant 110 N/m. The cup is displaced hori
ehidna [41]

Answer:

Option B is the correct answer.

Explanation:

Period of a spring is given by the expression

            T=2\pi \sqrt{\frac{m}{k}}

Here, spring constant, k = 110 N/m

         Mass = 0.41 kg

Substituting,

        T=2\pi \sqrt{\frac{m}{k}}=2\pi \sqrt{\frac{0.41}{110}}=0.38s

Option B is the correct answer.

5 0
4 years ago
List 3 different thermometers made based on their uses.<br> help please
My name is Ann [436]

Answer:

Digital thermometers.

Electronic ear thermometers.

Forehead thermometers.

Explanation:

7 0
3 years ago
Other questions:
  • Which factors improve soil fertility? Select the three correct answers.
    15·2 answers
  • This equation is known as the ideal gas law, and it can be used to predict the behavior of many gases at relatively low pressure
    10·1 answer
  • Helppp me please !!
    15·1 answer
  • The suspension system mounts the car's wheels<br> solid on the frame. True or false?
    6·1 answer
  • A 3000 kg deck is cantilevered over a beam as shown. It is attached to the house at the other end. Find the force of the beam.
    15·1 answer
  • Which formula below correctly states Coulomb's Law?
    13·2 answers
  • If you double the distance between you and the center of Earth, what happens to the strength of the gravitational field you expe
    12·1 answer
  • Galaxies are made of millions of stars, interstellar gas, and dust that stay relatively close together due to magnetic attractio
    9·1 answer
  • a 110 volt wall outlet supplies power to a stereo with a resistance of 10 ohms. how much current is flowing through the stereo?​
    9·1 answer
  • What best describes index fossils? Organisms that existed over a limited period Organisms whose age is hard to detect Fossils th
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!