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
tresset_1 [31]
3 years ago
7

A 124-kg balloon carrying a 22-kg basket is descending with a constant downward velocity of 20.0 m/s. A 1.0-kg stone is thrown f

rom the basket with an initial velocity of 15.0 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 5.00 s after it was thrown. Assume that the balloon continues its downward descent with the same constant speed of 20.0 m/s. (a) How high is the balloon when the rock is thrown? (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 (i) at rest in the basket and (ii) at rest on the ground.
Physics
1 answer:
Ierofanga [76]3 years ago
6 0

Answer:

a)-296 m/s

b)-176 m

c) 198 m

Explanation:

given data:

v_{oy}\\=-20 m/s

v_{x}= 15 m/s

t = 6 s

To find

a)H_{1}

b)H_{2}

c) d

d) find the velocity of observer at rest in basket and rest on ground

a) <em>according to kinematic equation the displacement is given by:</em>

H_{1}=v_{oy}t\\-\frac{1}{2} gt^{2}..............(1)

putting values in 1

H_{1}=-296 m/s

negative sign is due to direction and also we choose to take off point to be the origin

b) <em>while the stone was travelling </em>H_{1}<em> for 6 s so the ballon was also travelling displacement  </em>H_{b}<em> with </em>v_{oy}\\<em> </em>

H_{b}<em> =</em>v_{oy}t\\

     =-6*20

     =-120 m

the height above the earth is given by

H_{2}=H_{1}-H_{2}= -176 m

c) <em>the horizontal displacement is given by</em>

x=v_{x}t\\=15*6=90 m

so the distance between balloon and stone is

d=\sqrt{H_{1}^{2}+x^{2}  }=198 m

d) the velocity component of the balloon :

1) relative to person rest in the balloon are given by

The vertical component:

        v_{yr} =v_{by} +v_{py}=(-gt)-0=9.8*6=-58.8 m/s

The horizontal component:

         v_{xr} =v_{bx} +v_{px}= 15-0=15m/s

2) relative to person rest in the earth are given by

The vertical component:

        v_{yr} =v_{by} -v_{py}=(-gt)-20=9.8*6-20=-78.8 m/s

The horizontal component:

        v_{xr} =v_{bx} -v_{px}= 15-0=15m/s

You might be interested in
When u write on a piece of glass sheet with a piece of chalk , the writing is not clear explain .
svetlana [45]
Becuse your weighting with chalk that has pigment
6 0
3 years ago
A bumblebee darts past at 3 m/s. The frequency of the hum made by its wings is 152 Hz. Assume the speed of sound to be 342 m/s.
Veronika [31]

It'll be 152 Hz at the exact instant the bumblebee
is right at the tip of your nose, on his way past you.

Before he gets there, while he's coming at you,
he sounds like a frequency higher than 152 Hz.

After he passes by, and is going away from you,
he sounds like a frequency lower than 152 Hz.

8 0
3 years ago
Read 2 more answers
What is the answer to these questions?
Oksana_A [137]

Answer:

THES IS NOT

Explanation:

THIS PAPAER IS A FAKE PAPAER BEACISE POGI TALAGA AKO

7 0
3 years ago
Two asteroids identical to those above collide at right angles and stick together; i.e, their initial velocities were perpendicu
11111nata11111 [884]

Answer:

velocity = 62.89 m/s  in 58 degree measured from the x-axis

Explanation:

Relevant information:

Before the collision, asteroid A of mass 1,000 kg moved at 100 m/s, and asteroid B of mass 2,000 kg moved at 80 m/s.

Two asteroids moving with velocities collide at right angles and stick together. Asteroid A initially moving to right direction and asteroid B initially move in the upward direction.

Before collision Momentum of A = 1000 x 100 = $ 10^5$ kg - m/s in the right direction.

Before collision Momentum of B = 2000 x 80 = 1.6 x $ 10^5$  kg - m/s in upward direction.

Mass of System of after collision = 1000 + 2000 = 3000 kg

Now applying the Momentum Conservation, we get

Initial momentum in right direction = final momentum in right direction = $ 10^5$

And, Initial momentum in upward direction = Final momentum in upward direction = 1.6 x $ 10^5$

So, $ V_x = \frac{10^5}{3000} $  = $ \frac{100}{3} $  m/s

and $ V_y=\frac{160}{3}$  m/s

Therefore, velocity is = $ \sqrt{V_x^2 + V_y^2} $

                                   = $ \sqrt{(\frac{100}{3})^2 + (\frac{160}{3})^2} $

                                   = 62.89 m/s

And direction is

tan θ = $ \frac{V_y}{V_x}$     = 1.6

therefore, $ \theta = \tan^{-1}1.6 $

                   = $ 58 ^{\circ}$  from x-axis

4 0
3 years ago
How much heat is needed to vaporize 10.00 grams of water at 100.0°C? The latent heat of vaporization of water is 2,259 J/g
Nata [24]

Answer:

Heat of vaporization will be 22.59 j    

Explanation:

We have given mass m = 10 gram

And heat of vaporization L = 2.259 J/gram

We have to find the heat required to vaporize 10 gram mass

We know that heat of vaporization is given by Q=mL, here m is mass and L is latent heat of vaporization.

So heat of vaporization Q will be = 10×2.259 = 22.59 J

8 0
3 years ago
Read 2 more answers
Other questions:
  • A 250-gram cart starts from rest and rolls down an inclined plane from a height of 0.541m. Determine its speed at the bottom of
    5·1 answer
  • One of the 64.3-cm-long strings of an ordinary guitar is tuned to produce the note LaTeX: B_3B 3 (frequency 245 Hz) when vibrati
    15·1 answer
  • An airplane is flying in a horizontal circle at a speed of 92.1 m/s. The 55.6 kg pilot does not want his radial acceleration to
    9·1 answer
  • A 0.00275 kg air‑inflated balloon is given an excess negative charge q1 =−3.50×10−8 C by rubbing it with a blanket. It is found
    8·1 answer
  • 1.
    9·1 answer
  • What is force and matter plz answer ​
    9·2 answers
  • Give an example of a physical entity that is quantized. State specifically what the entity is and what the limits are on its val
    15·2 answers
  • Can sugar molecules produced from photosynthesis be rearranged into different compounds carry out life process
    10·1 answer
  • A block of wood has density 0.500 g/cm3 and mass 2 000 g. It floats in a container of oil (the oil's density is 0.750 g/cm3). Wh
    8·1 answer
  • A physical therapy exercise has a person shaking a 5.00 kg weight up and down rapidly. if the barbell is moving at 4.50 m/s, wha
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!