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ad-work [718]
3 years ago
7

If the astronaut in the video wanted to move upward, in which direction should he throw the object? Why?

Physics
2 answers:
PolarNik [594]3 years ago
7 0

Answer:

3 i belive

Explanation:

Alex_Xolod [135]3 years ago
3 0

Answer:

3.

Explanation:

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True or False: pH is a measure of how acidic or basic a solution is.
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True

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Evaluate tan45/tan45
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I'm not sure I completely understand the expression you want evaluated.

It looks like a fraction with the same exact thing in both the numerator and the denominator. A fraction like that always boils down to ' 1 '.

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FORMULA

\boxed {F = m \times a}

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3 years ago
There is a 250-m-high cliff at half dome in yosemite national park in california. suppose a boulder breaks loose from the top of
lorasvet [3.4K]

Part A. For this part, we use two equations for linear motion:

<span>y = y0 + v0 t + 0.5 g t^2                   ---> 1</span>

<span>vf = v0 + g t                                         ---> 2</span>

First we solve for t using equation 1: y0 = 0 (initial point at top), y = 250 m, v0 = 0 (at rest)

250 = 0.5 (9.8) t^2

t = 7.143 s

Now we solve for final velocity vf using equation 2:

vf = g t

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vf = 70 m/s

 

Part B. First we solve for the time it takes for the sound to reach the tourist.

t(sound) = 250 / 335 = 0.746 s

Therefore the total time would be:

t = 0.746 s + 0.300 s

t = 1.05 s

 

<span>Hence there is enough time for the tourist to get out before the boulder hits him.</span>

7 0
3 years ago
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