Physics, 15.12.2020 15:50, esnyderquintero

A physics student throws a ball thrown horizontally from the top of a building with a speed of 8 m/s. The student measures the height of the building to be 15m.

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answered: Shubbs

Following are the solution to the given question:

Explanation:

Please find the complete question in the attached file.

$a_x = 0\\\\a_y = -g = -9.81\ \ \frac{m}{s^2} \\\\v_{iy} = 0 \\\\y = v_{iy} \times t+ \frac{1}{2ay} \times t^2 \\\\ 15 = \frac{1}{2} \times 9.8 \times t^2 \\\\t = \sqrt{(2 \times \frac{15}{9.8})} \\\\$

$= 1.75 \ sec \\\\$

Distance:

$x = v_{ix} \times t \\\\$

$= 8 \times 1.75\\\\= 14 m$

A physics student throws a ball thrown horizontally from the top of a building with a speed of 8 m/s

answered: queeneaf

Using the concept of motion, the answers to the question posed on the motion of a dropped ball are :

Vertical component of acceleration = - 9.8 m/s²Horizontal component of acceleration = 0Initial vertical Velocity = 0Time taken = 1.75 seconds Landing distance from building = 14 meters

The vertical component of acceleration is denoted as $a_{y}$ :

The gravitational force acting on the ball in the downward direction has an acceleration of - 9.8 m/s². Hence,

$V_{y} = 9.8 m/s^{2}$

Gravitational force only acts downwards along the vertical, hence, horizontal component of acceleration will be Zero.

$V_{y} = 0$

then the vertical component of x, will be 0

$V_{x}$ = 0

The initial vertical velocity ; $V_{iy} is Zero$ :

$V_{iy} = 0$ :

The time taken :

S = 0.5gt² ; S = distance = 15 meters ; g = - 9.81

15 = 0.5(9.8)t²

15 = 4.9t²

t² = (15 ÷ 4.9)

t² = 3.061

t = √3.061

t = 1.75 seconds

Landing Distance from building :

Horizontal speed × time taken

$V_{ix} \times 1.75$

$8 \times 1.75 = 14 meters$

Therefore, the ball landed 14 meters away from the building.

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answered: Guest

elly's long hair:

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c. if elly has some principles, and doesn't want to write a bad check, then now she has a problem. her desire for the new hairstyle is in conflict with her honesty and integrity.

d. if the bank will not process a check she writes, then even if she had a million $$ in her account, she couldn't use any of it. the amount she has in her account is not the problem. and if i may suggest, she might as well close her checking account, and put the money where it'll work for her. it's not doing her a bit of good in a checking account, since she can't write any checks.

justin can't pay the full balance:

a. he can't even handle the credit limit he has now. under no circumstances should he ask for a higher limit.

b. he can ask for the grace period to be extended. but that's no solution, the bank will almost certainly refuse anyway, and there are much better options. he knew the rules of his credit card when he started using it.

c. he definitely should pay the interest on the balance, plus as much of the balance as he can cover at the same time.

d. he definitely should pay the minimum otherwise they could shut down his card. he should also pay as much more as he possibly can. he should also remember the awkward situation he's in, stop buying stuff on credit that he can't afford, and avoid adding any more debt.

i'd say that justin's best best option isn't on this list of choices. what he has to do: pay as much as he can at least the minimum payment plus as much more as he can and then avoid adding more debt.

answered: Guest

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