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SVEN [57.7K]
3 years ago
6

I need help with 1-2.b

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
7 0

Answer:

it is a i thick

Step-by-step explanation:

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To watch the video
Anettt [7]

Answer:

The ball shall keep rising tills its velocity becomes zero. Let it rise to a height h feet from point of projection.

Step-by-step explanation:

Let us take the point of projection of the ball as origin of the coordinate system, the upward direction as positive and down direction as negative.

Initial velocity u with which the ball is projected upwards = + 120 ft/s

Uniform acceleration a acting on the ball is to acceleration due to gravity = - 32 ft/s²

The ball shall keep rising tills its velocity becomes zero. Let it rise to a height h feet from point of projection.

Using the formula:

v² - u² = 2 a h,

where

u = initial velocity of the ball = +120 ft/s

v = final velocity of the ball at the highest point = 0 ft/s

a = uniform acceleration acting on the ball = -32 ft/s²

h = height attained

Substituting the values we get;

0² - 120² = 2 × (- 32) h

=> h = 120²/2 × 32 = 225 feet

The height of the ball from the ground at its highest point = 225 feet + 12 feet = 237 feet.

7 0
3 years ago
Which shows the list of numbers in order from least to greatest?
nirvana33 [79]

Answer:

-1, |-2|, |-3|, |3.5|, |3²|

Step-by-step explanation:

  • Calculate the absolute value (the absolute value of any number is always positive): 3, 3², 2 , 3.5, -1
  • Calculate the exponents : 3, 9, 2 , 3.5, -1
  • Put in order least to greatest : -1, |-2|, |-3|, |3.5|, |3²|
3 0
2 years ago
What is the height of the Tree?<br> 2 m<br> 3 m<br> 30 m
lisabon 2012 [21]

Answer:

The height of the tree is 3m

8 0
3 years ago
What are the solutions to the quadratic equation x? - 16 = 0?
makkiz [27]

Answer:

x^2 = 16

x = \pm 4

Thus the answer is (b)

7 0
3 years ago
If PR = 40, what are PQ and QR?
OlgaM077 [116]
B is the answer to ur question
4 0
3 years ago
Read 2 more answers
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