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
mote1985 [20]
3 years ago
14

A falling stone is at a certain instant 250 feet above the ground and 3 seconds later it is only 10 feet above the ground. From

what height was it dropped?
Mathematics
1 answer:
hjlf3 years ago
6 0
Let h =  the height (ft) from which the stone was dropped.

Assume that g = 32 ft/s² and ignore air resistance.

At time t seconds, the stone is 250 ft above ground. Therefore
(1/2)gt² = h - 250                 (1)

After another 3 seconds, the stone is 10 ft above ground. Therefore
(1/2)g(t+3)² = h - 10              (2)

Subtract (1) from (2).
(1/2)g[(t+3)² - t²] = 240
32(t+3)² = 480
(t+3)² = 15
t = 0.873 s

From (1), obtain
16*(0.873)² = h - 250
12.194 = h - 250
h = 262.194 ft

Answer: 262.2 ft (nearest tenth)
You might be interested in
.<br> gbuhhubhhbuubbbubuubhbhhhbbubhbhbhubuhhbhbu
Tpy6a [65]

Question:

gbuhhubhhbuubbbubuubhbhhhbbubhbhbhubuhhbhbu

Answer:

yes

4 0
3 years ago
The radius of the circle below intersects the unit circle at (Three-fifths, four-fifths). What is the approximate value of Theta
Fudgin [204]

The measured value of Theta is  53.1 degrees.

Given

The radius of the circle below intersects the unit circle at (3/5, 4/5).

<h3>What is tan theta?</h3>

The measure of the tan angle is defined as the ratio of perpendicular by the base.

The measure of the tan theta is;

\rm Tan\theta=\dfrac{x}{y}

Where the value of x is 3/5 and y is 4/5.

Substitute all the values in the formula

\rm Tan\theta=\dfrac{x}{y}\\\\\rm Tan\theta=\dfrac{\dfrac{4}{5}}{\dfrac{3}{5}}\\\\\\Tan\theta = \dfrac{4}{5} \times \dfrac{5}{3}\\\\Tan \theta=\dfrac{4}{3}\\\\\theta=tan{-1}(\dfrac{4}{3})\\\\\theta=53. 1 \ degrees\\\\

Hence, the measured value of Theta is  53.1 degrees.

To know more about Trigonometric ratios click the link given below.

brainly.com/question/22698523

3 0
3 years ago
HELP I ONLY HAVE THESE TWO QUESTIONS LEFT!!!!!!! First, How Many cubic blocks of side length 1/6 inch would it take to fill a cu
Ad libitum [116K]

Answer:

1. There are 8 cubic blocks are needed to fill a cube. Explanation in pic

2. 441 cubic blocks will fill the rectangular prism. Explanation in pic

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
5. principal = $450<br> rate = 5%<br> time = 4 years<br> simple interest = _<br> compound interest =
tatiyna

Answer:

simple interest :90

Step-by-step explanation:

Step 1: Multiply 450 with the interest rate which is 0.05 so that equal 22.5

Step 2: Multiply the 22.5 with the 4 years

So Multiply principal with the interest rate with the time

MAYBE

4 0
3 years ago
Find the value of x.
weqwewe [10]

Answer:

147

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • 51 less than the 8 times an unknown number is equal to 53.
    5·1 answer
  • Help me please ill give u Brainly
    15·1 answer
  • Help please asap!!!<br><br> please:(
    10·2 answers
  • A home mortgage for $70,000 at 12% for 29 years. What is the principle?
    12·1 answer
  • What is the domain of the function 2 sqr (x-6)
    13·1 answer
  • ram can do a piece of work in 8 days. He work fir 6 days and left. If hari finish as the remaining work . how much work is done
    6·1 answer
  • What is the slop of the line that contains the points (0,3) and (2,9) write your answer as a friction simplest from (hint:2/1 sh
    11·1 answer
  • omg guys imagine sneezing all day and then next thing hourssss later boom you lost your voice has that ever happened to you
    7·2 answers
  • Matt washed 3 cars in 50 minutes, what is his hourly rate of cars washed?
    11·1 answer
  • The sum of 20 and twice Vidya's height
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!