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
Advocard [28]
3 years ago
7

A rock is dropped from a cliff and hits the ground 6.0 seconds later. How high is the cliff?

Physics
2 answers:
PolarNik [594]3 years ago
6 0
It all depends on the wight of the rock to but each 1 sec is 1 mile so about 6 miles
Lemur [1.5K]3 years ago
5 0

Answer:

The height of the cliff is found to be 176.4 m

Explanation:

Since, the body is being dropped from a certain height and reaches the ground in some time. Thus, we can apply the equations of motion (modified for vertical motion) in this case, due to constant accelerated motion. We have the following data:

Acceleration due to gravity = g = 9.8 m/s²

Time to reach ground = t = 6 sec

Initial Velocity of the Rock = Vi = 0 m/s (Because, the rock will be at rest, initially)

Height of cliff = H = ?

Now, applying second equation of motion (modified for vertical motion), to the rock, between the top of the cliff and ground, we get:

H = Vi t + (1/2)gt²

Using values:

H = (0 m/s)(6 sec) + (1/2)(9.8 m/s²)(6 sec)²

<u>H = 176.4 m</u>

You might be interested in
A balloon will stick to a wooden wall if the balloon is charged
grigory [225]
<h2>Answer: either way</h2>

The balloon contains neutral charge atoms, that is, it has the same number of electrons (negative charge), protons (positive charge) and neutrons (no charge).

Then, when two objects come into contact, the electrons of one of them can become part of the other.

Thus, by bringing the balloon closer to the wall, the wall, which is also made up of atoms, will reorder its charges in such a way that its electrons or protons become part of the balloon, charging it.

7 0
3 years ago
A pair of narrow slits, separated by 1.8 mm, is illuminated by a monochromatic light source. Light waves arrive at the two slits
Nastasia [14]

Answer:

750 nm

Explanation:

d  = separation of the slits = 1.8 mm = 0.0018 m

λ = wavelength of monochromatic light

D  = screen distance = 4.8 m

y = position of first bright fringe = \frac{1cm}{5 fringe} = \frac{0.01}{5} = 0.002 m

n  = order = 1

Position of first bright fringe is given as

y = \frac{nD\lambda }{d}

0.002 = \frac{(1)(4.8)\lambda }{0.0018}

λ = 7.5 x 10⁻⁷ m

λ = 750 nm

3 0
3 years ago
Which is true of oxidation? PLS HELP FAST and thank you!
elena-14-01-66 [18.8K]

Answer:The Answer Is D

Explanation:

4 0
3 years ago
How can parents help children to gain friends?
Andre45 [30]

Answer:

You could try finding a familiar peer to join the activity with your child. Or ask your child who their friends are at school, or what they look for in a friend at school.

7 0
3 years ago
Read 2 more answers
Pete is driving down 7th Street. He drives 300 meters in 18 seconds. Assuming he does not speed up or slow down, what is his spe
Korolek [52]

Answer:

16.67m/s

Explanation:

Given parameters:

Distance Pete drove  = 300m

Time taken  = 18s

Unknown:

Speed  = ?

Solution:

Speed is the distance traveled per unit of time.

It is mathematically expressed as;

   Speed  = \frac{distance}{time}

Insert the parameters and solve;

  Speed  = \frac{300}{18}  = 16.67m/s

3 0
3 years ago
Other questions:
  • A transmission system at a radio station uses a/an _______ to convert a direct current into a highfrequency alternating current.
    12·1 answer
  • Why is gravity so weird? Will mark as brainliest
    10·2 answers
  • Which boundary is likely to form mountains why?
    12·1 answer
  • Please help me! Thank you so much!
    9·1 answer
  • A mass suspended from a spring is oscillating up and down as indicated. Consider the following possibilities. A At some point du
    14·1 answer
  • For all values of x, y, and z, which expression is equivalent to 5xy. 5z?
    15·2 answers
  • Scientists today learn about the world by _____. 1. using untested hypotheses to revise theories 2. observing, measuring, testin
    7·1 answer
  • What is a scientific theory is and under what conditions a theory may be revised?
    13·1 answer
  • Just a question anybody playing minècraft here?
    7·2 answers
  • Five locations are marked on the world map. which location is most prone to hurricanes? five locations are marked on the world m
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!