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
raketka [301]
3 years ago
10

Niagara Falls is made up of three waterfalls. The height of the Canadian Horseshoe Falls is about 188 feet above the lower Niaga

ra River. A log falls from the top
of Horseshoe Falls.
a. Write a function that gives the height h (in feet) of the log after t seconds. How long does it take the log to reach the river? Round your answer to the nearest
tenth
Mathematics
1 answer:
olga2289 [7]3 years ago
3 0

Answer:

  • h(t) = -16t^2 +188
  • 3.4 seconds

Step-by-step explanation:

The usual equation for ballistic motion is ...

  h(t) = -16t^2 +v0·t +s0

where v0 is the initial upward velocity, and s0 is the initial height above some reference point.

Here, we presume there is no initial vertical velocity, and the height is given as 188 ft above the river. Since we want the time to reach the river, we're solving ...

  h(t) = -16t^2 +188

  h(t) = 0

  -16t^2 +188 = 0

  t^2 -11.75 = 0

  t = √11.75 ≈ 3.4

It takes about 3.4 seconds for the log to reach the river.

You might be interested in
Is 6/10 closer to 0 , 1 or 1/2
Vikentia [17]

Answer:

1/2

Step-by-step explanation:

5/10=1/2

7 0
3 years ago
Read 2 more answers
Goby fish and shrimp naturally live close together. A pet store is selling bags
Blababa [14]

Answer:

The expression represents the total cost of the bag which contain x number of goby and x number of shrimp.

Step-by-step explanation:

Each goby fish costs $15 and each shrimp costs $10.

Each bag has an equal number of goby fish and shrimp.

So. let each bag has x number of goby and x number of shrimp

so, the cost of the bag = 15x + 10x

Take x as a common

so, the total cost = x (15+ 10)

so, the expression represents the total cost of the bag which contain x number of goby and x number of shrimp.

8 0
3 years ago
Read 2 more answers
4. The balance in Tom's account was
MrRissso [65]

Answer:

His balance is $3778.28

4 0
3 years ago
HELP PLS YALL HDHDGDUSHSHXHHXXHHXHXBXBXXHDBBDBDBDBDD
Vedmedyk [2.9K]

Answer:

with what?

Step-by-step explanation:

5 0
3 years ago
A recipe calls for 1/2 cup of ingredient A for every 1 2/5 cups of ingredient B. You use 4 cups of ingredient A. How many cups o
ad-work [718]
Let x = number of cups of ingredient B if 2 cups of ingredient A are used. Set up a proportion:  (1/2)/(1 2/5) = (2)/x. Cross multiplying we get (1/2)x = (1 2/5)(2) 
 (1/2)x = 14/5, so x = 28/5 = 5 3/5 cups.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Order the group of quadratic functions from widest to narrowest graph. y = 6x2, y = −4.5x2, y = −x2
    12·2 answers
  • a driver was fined $20.00 plus $4.00 for every mile per hour over the speed limit of 55 mph. is the fine was $76, how fast was t
    7·1 answer
  • 16 centimeters to 44.2 centimeters
    5·1 answer
  • Free-bee question: Find the Value for X.<br> X+39=106<br> A. 57 B. 67 C. 43 D. I don't know
    10·1 answer
  • Find the least common denominator of 7/20 and 3/28
    9·1 answer
  • Find the specified value for the arithmetic sequences with the given characteristics. a17 = 47 d = -3 a35= ?
    14·1 answer
  • At the product store you can buy four bags of bananas for 2084 how much would it cost if you were to buy 3 bags
    15·1 answer
  • What is the formula to find radius of the circle
    10·1 answer
  • PLEASE ANSWER QUICKLY
    14·1 answer
  • What is the value of x?<br> Enter your answer in the box.<br> mm
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!