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astraxan [27]
3 years ago
6

You buy a plastic dart gun and being a clever physics student you decide to do a quick calculation to find its maximum horizonta

l range. You shoot the gun straight up and it takes 4.1s for the dart to land back at the barrel. What is the macimum horizontal range of your gun?
Mathematics
1 answer:
IceJOKER [234]3 years ago
4 0
When a dark gun is shot upwards, the applicable equations are:

y= v0t sin θ − 1/2 gt2 
R = ∆x(t = 2v0 sin θ/g) = v^2 sin(2θ) / g 

when t is 4.1 seconds and <span>θ = 90 degrees, 
we can see in the horizontal range s</span><span>in(2θ) or sin 180 is equal to zero. Hence the range is equal to zero</span>
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the height of a ball thrown directly up with a velocity of 40 feet per second from a initial height of 5 ft is given by the equa
vovikov84 [41]
The equation is h=-16t²+40t+5.The ball will hit the ground when h=0. So:
0=-16t²+40t+5
16t²-40t-5=0
Using the quadratic formula, we get a positive value for t of <span>2.61930639376 seconds.
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8 0
3 years ago
Nick bought a bag of jell beans. He ate 15 jelly beans and then gave one-third of the remaining jelly beans to his brother. If h
icang [17]
25*3+15 gives you the answer
4 0
3 years ago
5500 milliliters equal how many liters show work
Eva8 [605]

Answer:

5.5 liters

Step-by-step explanation:

1 milliliter equals to 1/1000 part of a liter, which is 0.001 liter.

1 milliliter = 1 * 0.001 liter

So if you have 5500 milliliters that means it equals to 5500 times one milliliters and 1 milliliter = 1 * 0.001 liter, so for 5500 milliliters it is 5500 times as much

5500 * 0.001

5500 * 1/1000

5500 / 1000

5.5 liters

As long as you know this number 0.001 , then it is easily to calculate between liters and milliliters.

EXTRA:

To convert from amount A which is given in a certain quantity, to another quantity, you sometimes have to multiply and in other cases you need to divide by a certain factor. The factor defines the relationship between the quantities.

Suppose you have 1000 times 1 milliliter then you can find the amount in liters by multiplying that number of milliliters times 0.001.

It is easy to see that

1000 * 1/1000

1000 / 1000

= 1 liter, but that is easy, because I choose an easy number for the amount of milliliters to convert into liters. But it works exactly the same for any amount!

8 0
3 years ago
Read 2 more answers
If f(x) = 3x - 1 and g(x) = x + 2, find (f+ g)(x).
Volgvan

Answer:

4x+1

Step-by-step explanation:

Since you're finding (f+g) (x), it means you are adding f(x) and g(x) together.

so you add: (3x-1) and (x+2)

combining like terms, you get 4x and 1, which means (f+g)(x)= 4x+1

4 0
3 years ago
Read 2 more answers
Need help with all of them please, do as much as you can please!
Vlad [161]

Answer:

I believe these are all of the correct answers

1. You are correct with the 5

2. 46/3 or 15.33333

3. 84/5 or 16.8

4. 35/9 or 3.8888...

5. 100/9 or 11.11111...

6. 15/4 or 3.75

7. 6/15 or 0.4

8. 1/15 or .066666...

9. 4/21 or 0.190476

10. 15/66 or 0.227273

11. 1/3 or .33333....

12. also 1/3

13. 3 21/32

14. 2 5/36

15. 1 19/40

16. 7/20

17. 4 14/15

18. 15 1/8



8 0
3 years ago
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