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Home Q & A Board Science-Related Homework Help Physics
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bio_man bio_man
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2 years ago
Paulo, who is standing on the football field, kicks a ball with velocity 30m/s and at the angle of 70° . Calculate the following quantities:

(a) initial horizontal velocity component;
(b) initial vertical velocity component;
(c) time of ascent;
(d) time of descent;
(e) time of flight;
(f) maximum height reached; and
(g) maximum range covered
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wrote...
#1
2 years ago
Thank you so much!
bio_man Author
wrote...
#2
Educator
2 years ago
Quote from: RioNii (2 years ago)
Thank you so much!

Let me know if you're confused about any of the calculations.
wrote...
#3
2 years ago
I'm just curious at letter g, was it supposed to have another value since you typed the word and x?
bio_man Author
wrote...
#4
Educator
2 years ago
g stands for the acceleration due to gravity, which is 9.8 m/s^2

I replaced g with 9.8 then multiplied it by -1/2 to get -4.9, but I accidentally wrote 4.8.

I'm sorry! please redo that calculation using 4.9 instead
wrote...
#5
2 years ago
Oh it's fine, I already double checked it, but I'm talking about the letter g which is the maximum range covered, which you wrote set t = 5.875 and x. I was just wondering if the word "and x" was relevant to the answer. Sorry for the misunderstanding
bio_man Author
wrote...
#6
Educator
2 years ago
Quote from: RioNii (2 years ago)
Oh it's fine, I already double checked it

Smart!

Quote
g which is the maximum range covered, which you wrote set t = 5.875 and x. I was just wondering if the word "and x" was relevant to the answer. Sorry for the misunderstanding

Oh, you mean for part (g). What I meant here is in order to find the complete range, sub. in 5.875 into that formula:

\[ x = v_0 \cdot cos(\theta) \cdot t \]
\[ x = 30 \cdot cos(70^{\circ}) \cdot 5.875 = 60.3\;m \]
wrote...
#7
2 years ago
Oh so the maximum range covered is 60.3m?
bio_man Author
wrote...
#8
Educator
2 years ago
Yes, along the x-axis.
wrote...
#9
2 years ago
Thank you so much for the help kind sir, I hope you'll continue to help more people. I'll probably be one of those people from time to time. Thank you sir, have a great day!
bio_man Author
wrote...
#10
Educator
2 years ago
Anytime!
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