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
Gelneren [198K]
3 years ago
10

A stone is thrown horizontally with an initial speed of 8 m/s from the edge of a cliff. a stop watch measures the stone's trajec

tory time from the top of the cliff to the bottom to be 4.3 s. what is the height of the cliff?
Mathematics
1 answer:
Tamiku [17]3 years ago
7 0

Answer:

90.6m

Step-by-step explanation:

Initial speed = 8m/s

Time = 4.3 s

In studying the motion of an object, we often make use of kinematic equation

s = ut + 1/2at^2

v^2 = u^2 + 2as

a = (v - u) / t

v = final velocity

u = initial velocity

s = distance or height

t = time

a = acceleration due to gravity

Given time to hit the ground as 4.3s, we calculate the height by using

s = ut + 1/2at^2

Since the stone is moving against gravity, a is negative

u = 0

s = 0(4.3) +1/2(-9.8)(4.3)^2

s = -90.6m

The height of the cliff is 90.6m

You might be interested in
What is 10t =90 and how do I solve this?please help
Nesterboy [21]
To solve this you have to divide 90 by 10 which would be 9 so


t=9

Hope it helps
6 0
3 years ago
If 5% more than a is b, and b is 15% less than, what is the ratio of a to c? Please answer quickly.
Cerrena [4.2K]

Answer: 24 5 + 9 = 15 + 9 = 24

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
On a True/False test, Amy answered the first three questions wrong but answered the rest of the questions correctly. On the same
borishaifa [10]

Answer:

89.29%

Step-by-step explanation:

Given that Scott answered exactly two questions wrong. He answered the last question wrong, the 26 questions before it correctly, and the question before that wrong.  Since Amy and Scott were both incorrect on the same question exactly once, Scott would have done wrong only in I or II or III question.  If I question was wrong by both, total questions = 28, if II wrong total questions =29 and for iii total questions =30

Greatest possible percent would occur if total questions are less

i.e. when total =28

Greatest percent = \frac{28-3}{28} =89.29%

3 0
3 years ago
Lines l, m, and n are parallel. What is the value of x?Lines l, m, and n are parallel. Parallel lines labeled, top to bottom, l,
melisa1 [442]
The answer is 58 because its the same thing.
hope this helps.
3 0
3 years ago
Read 2 more answers
If a cable is 50 meters long. How much is that in decimeters?
zepelin [54]

Answer:

500 because when you dm yu multiply it

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Explain how the distributive property helps us multiply the following polynomials and why and how the final products differ: (a
    9·1 answer
  • √64/169 Evaluate.       IDK 
    11·1 answer
  • What is the quotient (2x3 − 15x2 − 10x + 16) ÷ (x − 8)? 2x2 − x − 2 2x2 + x + 2 2x2 − x + 2 2x2 + x − 2?
    12·1 answer
  • Fraction form for -2.3?
    8·2 answers
  • A family is taking a picture, with everyone in the family standing in a row. In the family, there are two sets of twins. In how
    13·1 answer
  • Find the slope of the line y=5x+4
    5·2 answers
  • A politician claims that a proposal for a new traffic law is broadly supported by both political parties and that a person from
    6·1 answer
  • PLZ HURRY i need this for test if you have the answers for all questions plz put the test is for plato algebra A1 unit3 post tes
    7·1 answer
  • Help plz..And No links!! I repeat No links!!
    6·2 answers
  • Elvera Hilton earns $12 an hour at her job. The hours she worked during each of the last four weeks are shown below
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!