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
maria [59]
3 years ago
11

A group of big city tenants were upset about rising rent for their apartments, and decided to play a prank on the Building Manag

er. They went up to the top floor of the
building, which was 176.4 m above the sidewalk, and waited. They wanted to drop the balloon at just the right time, so they needed to make a quick calculation. How many
seconds before the Building Manager walks to the spot should they drop the balloon?
Physics
1 answer:
Naya [18.7K]3 years ago
5 0

Answer:

  t = 6 s

Explanation:

This is a free fall exercise

          y = y₀ + v₀ t - ½ g t²

If the balloon is released its initial velocity is zero, when it reaches the floor its height is also zero, we substitute

         0 = y₀ + 0  - ½ g t2

         t = √(2yo / g)

let's calculate

         t = √ (2 176.4 / 9.8)

         t = 6 s

the balloon must be released 6 s before the person reaches the building

Abrir en Google Traductor  

Comentarios

You might be interested in
In this first example of constant accelerated motion, we will simply consider a car that is initially traveling along a straight
algol13

Answer:

v_{f} =25m/s

Explanation:

Kinematics equation for constant acceleration:

v_{f}  =v_{o} + at=15+2*5=25m/s

4 0
3 years ago
What is the cooling power P? Recall that the rate at which energy is removed, also called the cooling power, was described earli
gayaneshka [121]

Answer:

36.667

Explanation:

(2.2*10^4)/(10*60)

3 0
3 years ago
Which correctly describes electric potential, electric field, and electric (or electrostatic) force?
vlabodo [156]

Answer:

E

Explanation:

A vector is a physical quantity that has magnitude and direction while a scalar is a physical quantity that has magnitude only

*electric potential is a scalar quantity because it only has magnitude

*electric field and electric force are vector quantities because they have magnitude and direction

7 0
3 years ago
An Object, Start from rest w Confront Aiceleration 8m/s2 along a
shutvik [7]

Answer:

A)   v = 40 m / s, B)   v_average = 20 m / s

Explanation:

For this exercise we will use the kinematics relations

         

A) the final velocity for t = 5 s and since the body starts from rest its initial velocity is zero

         v = vo + a t

         v = 0 + 8 5

         v = 40 m / s

B) the average velocity can be found with the relation

         v_average = vf + vo / 2

         v-average = 0+ 40/2

          v_average = 20 m / s

6 0
3 years ago
If 1 gallon of a liquid weighs 4 pounds how much would one ounce weight (keep in mind that liquid ounces are different than weig
Bas_tet [7]

Answer:

64 ounces

Explanation:

Pound is the unit of mass in the imperial system of units.  It is used in the United States. Its calibration is done with the SI unit of mass which is kilogram. 1 lb =  0.45359237 kg

1 gallon = 4 pounds

1 pound = 16 ounces weight

So,

4 pounds = 16 × 4 = 64 ounces weight

So, 1 gallon is equal to 64 ounces weight.

1 gallon = 128 fluid ounces.

3 0
3 years ago
Other questions:
  • Waves inwhich the particles vibrate at right angles to direction is called
    8·1 answer
  • A parallel plate capacitor is charged up by a battery. The battery is then disconnected, but the charge remains on the plates. T
    9·1 answer
  • The atoms in a sample of carbon must contain nuclei with the same number of
    14·1 answer
  • Calculate the density of the football. Use the formula D = m/V where D is the density, m is the mass, and V is the volume. Recor
    10·2 answers
  • Mac and Tosh are arguing in the cafeteria. Mac says that if he flings the Jell-O with a greater speed it will have a greater ine
    13·1 answer
  • Two pieces of silk have an electric charge after being rubbed on a piece of amber. What will happen when the two silk pieces are
    12·2 answers
  • You wish to lift a 12,000 lb stone by a vertical distance of 15 ft. Unfortunately, you can only generate a maximum pushing force
    5·1 answer
  • A living thing is called?
    9·2 answers
  • (a) Find the speed of waves on a violin string of mass 717 mg and length 24.3 cm if the fundamental frequency is 980 Hz. (b) Wha
    11·1 answer
  • Convert 23 miles into feet.<br> **There are 5280 feet in 1 mile** *
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!