A ball is thrown horizontally with a speed of 10 m/s, from the edge of the top of the building of height 19.6m, and later strikes the ground.1) For how long was the ball in the air?
2)what is the vertical component of the velocity just before the ball strikes the ground?
3) what is the horizontal component of the velocity just before the ball strikes the ground?
4)how far from the base of the building did the ball strike the ground?
5) what is the speed of the ball just before it strikes the ground?

Answers

Answer 1

Answer: 1) You need to solve t - $19.6=.5(9.8)t^2$
2) Then solve f $vf^2=2(9.8)(19.6)$
3) As it's constant it is still 10m/s
4) You need to use the time from part 1 times 10m/s
5) Use Pythagorean theorem with 10m/s and vf

I am pretty sure it will help you.

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Evaluate the following 4+18÷3+4×5

Answers

The answer is 57. That is what I got when I worked it out then I looked on a calculator then said the same thing. Cause if u do it on a calculator it says 56.6666666666666666666666666666666666666666666666666 then you just round that and get 57.

Who procrastinates to study✋

Answers

Hi There! :)

Who procrastinates to study

ME!!!!

The school held a bake sale as a fundraiser. The bake sale only accepted quarters, loonies, and toonies.⅓ of the coins in the bank are quarters and ⅕ of the coins are loonies. There are 48 toonies.

How much money did the fundraiser make?

Answers

Answer:

There are 102 coins total:

34 Quarters

20 loonies

48 toonies

Step-by-step explanation:

Assuming money is counted in coins instead of value, it can be solved like this.

1. find a common denominator for 1/3 and 1/5. We can use 15. So, of the money collected, 5/15 were quarters and 3/15 were loonies. This makes 7/15 toonies. If there are 48 toonies, we can divide this by 7 to find the value of 1/15. 48/7 = 6 6/7. Multiply this number by 15 (for each value) and you get 102 6/7.

There are 102 coins total:

34 Quarters

20 loonies

48 toonies

Heres a math problem. Help me out people. Jill has 3 crayons. Jeff has 5 more crayons than Jill. How many crayons do they have? Write a number sentence to solve.

Answers

jill has 3 crayon

jeff has 5 more crayons than jill =5+3=8

they have eleven crayons .

a movie theater charges $6 for a ticket to a matinee and $10 for a ticket to an evening show. last week on tuesday a total of 130 tickets were sold, with the total income amounting to $1120. how many tickets to a matinee were sold?

Answers

Answer:

45 tickets for the matinee were sold

Step-by-step explanation:

let m represent the number of matinee tickets sold and

let e represent the number of evening tickets sold.

Create a system of equations and solve for m

m + e = 130 → (1) ( total ticket sales )

6m + 10e = 1120 → (2) ( income from tickets sold )

multiplying (1) by - 10 and adding the result to (2) will eliminate e

- 10m - 10e = - 1300 → (3)

add (2) and (3) term by term to eliminate e

(6m - 10m) + (10e - 10e) = 1120 - 1300

- 4m + 0 = - 180

- 4m = - 180 ( divide both sides by - 4 )

m = 45

the number of matinee tickets sold was 45

60 minutes is 20% of blank minutes

Answers

$p\%=(p)/(100)\n\n20\%=(20)/(100)=(2)/(10)=(1)/(5)\n\n60min\ of\ \boxed{x}\ is\ 20\%\n\Downarrow\n(60)/(x)=(1)/(5)\ \ \ \ \ |cross\ multiply\n\n1\cdot x=5\cdot 60\n\n\boxed{x=300}\n\n\underline{Answer:60\ min\ is\ 20\%\ of\ 300\ min.}$

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