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GaryK [48]
3 years ago
15

Free-falling body: h = -15t + 1/2at^2 + 5 (Solve for a)

Mathematics
1 answer:
slava [35]3 years ago
7 0

When a body is said to be in a state of free fall, therefore this means that the only force associated with it is gravity. Gravity imposes an acceleration of about 9.81 m/s^2. Therefore we do not need to calculate for a, since a = g. (g = acceleration due to gravity)

 

<span>a = 9.81 m/s^2</span>

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The table below represents the displacement of a bird from its nest as a function of time: time (hours) x displacement from nest
zubka84 [21]
Answer: See each part below.

Part A: The y-intercept is the first value, or 12. That means that they bird is 12 miles from its nest when the time started.

Part B: The average rate of change is the slope. From 1 to 3 hours, the bird went from 20 to 36 or 16 miles. 16 miles in 2 hours is the same as 8 miles in 1 hour.

Part C: To find the extent of the domain, write and solve the following equation for 172 miles.
172 = 8x + 12
160 = 8x 
20 = x

The domain will go up to 20 hours.
3 0
4 years ago
Today, 6 friends went out for lunch. Their total bill was $27.60, including tax and gratuity. They decided to split the bill equ
Paladinen [302]

Step-by-step explanation:

Right, okay, so this is a bit of a weird one. Let's go step by step.

"Today, 6 friends went out for lunch." = The number 6 is gonna be in our equation somewhere.

"Their total bill was $27.60" = so is the number 27.6

"They decided to split the bill equally" = 27.6 "split equally" (aka divided by) 6 friends is 4.6

"each paid with a $10 bill" = This is where it gets a lil weird. So, if they divided the bill among them, none of their amounts are gonna be anywhere near ten dollars. This is one of those questions that wouldn't really happen in real life. People would probably use fives instead, but whatever. So a number we'll be using for something is 10.

"How much money will each person get back?" = So we have to find the amount they all paid (10) minus the amount each one had to pay (4.6).

To put it all into a full equation...

10 - ( 27.6 / 6 )

Divide.

10 - 4.6

Subtract.

5.4

Put back into money form.

$5.40

Answer:

Each person will get back $5.40.

7 0
3 years ago
Read 2 more answers
If (-3, y) lies on the graph of y = 3-x, then y =
AnnyKZ [126]

Answer:

y=6

Step-by-step explanation:

y=3-x

x=-3

y=3-(-3)

y= 3+3

y=6

7 0
3 years ago
3/4 + 3/4 = 3/11 + 6/11= 3/10 +
valentina_108 [34]
+ what??????????????
3 0
3 years ago
* 2x+50=0<br> How much is X
tamaranim1 [39]

Answer:

-25

Step-by-step explanation:

                      2x + 50 = 0

                               2x = 0 - 50

                                     = -50

                                   x = -50 / 2

                                      = -25

<em>Hope this helps</em>

<em>:D</em>

5 0
3 years ago
Read 2 more answers
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