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
irakobra [83]
3 years ago
7

A ball is dropped out of a window and hits the ground at 14.5 m/s. How long did it take to fall to the ground?

Physics
1 answer:
Lerok [7]3 years ago
3 0

Answer:

Explanation:

Use the one-dimensional equation:

v_f=v_0+at which says that the final velocity of a falling object is equal to its initial velocity times the acceleration of gravity times the time it takes to fall. We have the final velocity, -14.5 (negative because its direction is down and down is negative), initial velocity is 0 (because it was held still by someone before it was dropped), and acceleration is -9.8 (negative again, because direction is down while acceleration increases). Filling in:

-14.5 = 0 - 9.8t and

-14.5 = -9.8t so

t = 1.5 seconds

You might be interested in
Which best describes the energy of a sound wave as it travels through a medium?
qaws [65]

Answer:

it increases

Explanation:

7 0
3 years ago
Read 2 more answers
Boyle's Law mainly involves _______.
goblinko [34]
Your answer is B, gases
6 0
3 years ago
Non examples of gravity ?
Afina-wow [57]
Floating. When you have no gravity you have nothing to be pushing you down to the floor so that would be an example of no gravity pushing on you.
3 0
3 years ago
Read 2 more answers
Please help me with my physics I do not understand! Please provide work thank you.
Studentka2010 [4]
Fe=K Q1/Q2/d2
Q1 is the first charge
Q2 is the second charge
d is the distance
K= 9x10^9 NM^2/C2
Now let’s plug the numbers
Fe=9x10^9NM^2/C2 (2x10^-4C)(8x10^-4C) / (0.3m^2) you notice we took away the negative charges when we plugged the charges
Ok now we notice that we have C2 which is C to the power 2 we can write it as C^2 and we have two CSU’s beside each one of the charges we can get rid of them all by curtailment
And we can curtailment the M^2and the other M^2
Now we left with only 9x10^9N (2x10^-4)(8x10^-4)/ 0.3
Let’s multiply the (9)(2)(8)=144
And add the exponents (9)+(-4)+(-4)=1
So now we got 144x10N divide by the distance which is 0.3
144x10N / 0.3 = 4800N
Hope it helps u understand :)
3 0
3 years ago
Select the things that would happen if the Moon were to vanish. (You may select more than one.)
Trava [24]

Answer:

The Answer Is A,C,D

Explanation:

The gravitational pull from the moon make bigger waves'

There would be no moon for eclipses

There would be more sun and no moon

3 0
3 years ago
Other questions:
  • Floating piece of wood - buoyancy question.?
    15·1 answer
  • It is advised not to hold the thermometer by the bulb while reading it
    12·1 answer
  • A small toy car travels 2.0 meters in 120 seconds. what is the speed of the car?
    6·1 answer
  • If a toy has a mass of 1 kg, it has an Earth weight of​
    14·1 answer
  • 009 10.0 points
    6·2 answers
  • Hot coffee in a mug cools over time and the mug warms up. Which describes the energy in this system?
    11·2 answers
  • I NEED HELP ASAP PLEASE!
    7·2 answers
  • Question 2 of 10
    8·1 answer
  • Explain electrostatic force
    11·1 answer
  • Yall is this right
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!