10 kg ball is thrown into the air. it is going 3.0 m/s when thrown. how much potential energy will it have at the top?
1. 10 kg ball is thrown into the air. it is going 3.0 m/s when thrown. how much potential energy will it have at the top?
Energi potensial yang dimiliki bola bermassa 10 kg yang dilempar dengan kecepatan 3 m/s ke atas saat di titik tertinggi adalah sebesar 45 J.
Penjelasan dengan langkah-langkahDiketahui:
m = 10 kg
v = 3 m/s
Ditanya: Ep di titik tertinggi
Jawab:
Asumsikan nilai percepatan gravitasi sebesar 10 m/s² (g = 10 m/s²). Pertama, hitung ketinggian maksimum yang akan dicapai bola. Karena arah gerak bola ke atas, percepatan gravitasi akan bernilai negatif (mengalami perlambatan). Saat di titik tertinggi, nilai kecepatan akhirnya adalah 0 m/s.
2gh = v[tex]_t[/tex]²-v₀²
2·(-10)·h maks = 0²-3²
-20h maks = 0-9
-20h maks = -9
h maks = 9/20
h maks = 0,45 m
Lalu, hitung besarnya energi potensial pada ketinggian tersebut.
Ep = mgh = 10·10·0,45 = 45 J
Jadi, energi potensialnya yang akan dimilikinya di titik tertinggi adalah sebesar 45 J.
Besarnya energi potensial dapat juga dicari dengan hukum kekekalan energi mekanik.
Em₁ = Em₂
Ep₁+Ek₁ = Ep₂+Ek₂
mgh₁+½mv₁² = mgh₂+½mv₂²
Pada kondisi pertama, bola masih berada di bawah. Asumsi dilemparkan dari tanah, maka ketinggian awalnya adalah 0 m (h₁ = 0 m) dengan kecepatan awal 3 m/s. Pada kondisi kedua, bola mencapai ketinggian maksimum sehingga nilai kecepatan akhirnya adalah 0 m/s (v₂ = 0 m/s). Mari hitung besarnya energi potensial pada kondisi kedua tersebut.
10·10·0+½·10·3² = Ep₂+½·10·0²
0+5·9 = Ep₂+5·0
45 = Ep₂+0
Ep₂ = 45 J
Jadi, energi potensialnya yang akan dimilikinya di titik tertinggi adalah sebesar 45 J.
Pelajari lebih lanjutMateri tentang Menghitung Perbandingan Energi Potensial dari Dua Objek Berbeda Kondisi https://brainly.co.id/tugas/241579
#BelajarBersamaBrainly
#SPJ4
2. A ball is thrown and follows the parabolic path shown above .....
Jawaban:
A ball is thrown and follows the parabolic path shown above ..... = Sebuah bola dilempar dan mengikuti lintasan parabola pada gambar di atas .....
Penjelasan:
Itu ya bahasa indo nya
3. The ball is thrown to another side aktiv atau paasive
Jawaban:
aktif
Penjelasan:
Maaf kalo salah
#BrainlyTeam
Jawaban:
its an active sentence
4. 1. Jon held the ball in his hands. he bounced it slowly on the ground. Once. twice. he crouched low and the jumped. the ball flew into the air. up, up, up, it went. then down, down, down, into the basket "yes!" he yelled. "nothing but net!"
jon memegang bola di tangannya.dia meloncat perlahan ke tanah.sekali.duakali.dia jongkok perlahan dan lompat.bolanya terbang ke langit.atas,atas,atas.lalu turun,turun,turun ke keranjang "yaa!"dia bersorak "tidak ada tapi jaring"
maaf kalo salah brojon memegang bola di tangannya. dia memantulkannya perlahan di lantai. sekali. duakali. dia sedikit berjongkok dan melopat. bola melayang diudara. keatas keatas keatas, dia pergi. lalu kebawah kebawah kebawah ke arah keranjang. ya! dia berteriak. tidak ada tetapi net(?)
5. What is the of a balla. triangularb. squarec. straightd. sphericaltolong di jawab
Jawaban:
D. Spherical
Penjelasan:
Artinya bentuk bola
Semoga Membantu :)
jawabannya
d.spherical moga benar
6. The ball is in the box.The ball is on the boxThe ball is under the boxThe ball is behind the box.The ball is in front of the boxThe ball is above the boxThe ball is below the box.The ball is between two boxesThe ball is next to the box
Jawaban:
The ball is inside of the box.
7. A small bag 0.3 kg is thrown horizontally with a constant speed of 10m/s. the ball hits the wal and reflected with the same speed. what is the change in the mommentum of the ball?
Jawaban:
nggak bisa bahasa Inggris
Penjelasan:
tanya Google sudah belum
8. a boy thrown up a ball vertically upward with the speed of 3 m/s. what is the maximum height can reached if acceleration of gravity is 9,8 m/s ?
[tex] v_{o} = 3m^{2} \\ g=9,8m/ s^{2} \\ \\ h_{maks} ....? \\ \\ h_{maks} = \frac{ v_{o} ^{2} }{2g} \\ \\ h_{maks} = \frac{(3)^{2} }{2x9,8} \\ \\ h_{maks} = \frac{9}{19,6} \\ \\ h_{maks} =0,45 m[/tex]
9. The ball is thrown to another side itu kalimat pasive atau aktiv ya
Jawaban:
Aktif
Penjelasan:
Maaf kalo salah
BrainlyTeam
Jawaban:
The ball is thrown to another side itu kalimat pasive atau aktiv ya=
English Bola yang dilempar ke sisi lain adalah kalimat pasif atau aktifJAWAB:AKTIV/AKTIF
Penjelasan:
GOOD LUCK!
#BRAINLY
10. 35. Arrange these jumbled words intoa good order!Is - the ball-a-sphere - likea. Is the ball sphere like?b. The ball like is a spherec. The ball is like a sphered. A sphere is like the ball
Jawaban:
C. The ball is like a sphere
Jawaban:
Arrange these jumbled words into
a good order!
Is - the ball-a-sphere - like
a. Is the ball sphere like?
b. The ball like is a sphere
c. The ball is like a sphere
d. A sphere is like the ball
jwbn yg bnr adalah opsi C
#CMIIWanswerby:Cia
11. A ball with a mass of 200g is placed on a compressed spring. The spring is then released and the ball bounces up. The compressed spring has 5 3 of elastic potential energy. : (a) Calculate the speed of the ball immediately when the ball bounces up. (b) What is the height that can be reached by the ball from the position it was released? [gravitational acceleration = 10ms ³]soal A nya saja please
Jawaban:
Gk tau
Penjelasan:
Gk bisa bahasa inggris :v
12. The velocity of a ball thrown directly up in the air is given by v(t) = 20 − 10t, where t is the time in seconds. At what times will the velocity be between 10 m/s and 15 m/s? (0.5s < t < 1s)
v(t)' = 20 - 10t
10 = 20 - 10t
10t = 10
t = 1 s
v(t)" = 20 - 10t
15 = 20 - 10t
10t = 5
t = 0,5 s
0,5s < t < 1s
because :
v(t)' < v(t) < v(t)"
Hope this helps you !
13. Name the energy transfer which occur when a) an electric bell rings b)someone speaks into a microphone c)a ball is thrown upwards d) there is a picture on a television screen e)a torch is on
D. Ball is thrown upwards
14. A ball A is thrown vertically upward from the top of a 30-m-high building with an initial velocity of 5 m/s. At the same instant another ball B is thrown upward from the ground with an initial velocity of 20 m/s. Determine the height from the ground and the time at which they pass.
Jawab:
Penjelasan dengan langkah-langkah:
15. A ball of mass 0.5kg is thrown vertically upwards with a kinetic energy of 100J. Neglecting air resistance calculatea the initial speed of the ballb the potential energy of the ball at its highest pointc the maximum height to which the ball rises
Penjelasan:
given:
m = 0,5 kg
Ek = 100J
Find:
a the initial speed of the ball, Vo =?
b the potential energy of the ball at its
highest point, Ep max=?
c the maximum height to which
the ball rises, h max=?
solutions:
a) Ek = ½.m.Vo²
100 = ½.(0.5).Vo²
100 = 0.25. Vo²
Vo² = 400
Vo = √400
Vo=20m/s
b) Ep max = Ek max = 100J
c) Ep = m. g. h
100 = 0,5. (10). h
100 = 5 h
h = 100/5
hmax=20m
16. A ball is thrown vertically upwards and reaches its maximum height 2.0 s later a. What is the initial velocity of the ball? b. What is the maximum height that the ball reaches?
Given : Time taken to reach the maximum height t=2 s
a=−g=−10m/s ^2
The initial velocity of the ball can be calculated by,
Using v=u+at
∴ 0=u−10×2 ⟹u=20 m/s
Using S = ut + 1/2at^2
S = 20.2 + 1/2 (-10)(2)^2
S = 40 + (-20)
S = 20m (the maximum height)
17. A ball is thrown vertically upwards and reaches its maximum height 2.0 s later a. What is the initial velocity of the ball? b. What is the maximum height that the ball reaches?
Jawaban:
a. 20m/s
b.20m
Penjelasan:
Given : Time taken to reach the maximum height t=2 s
a=−g=−10m/s ^2
The initial velocity of the ball can be calculated by,
Using v=u+at
∴ 0=u−10×2 ⟹u=20 m/s
Using S = ut + 1/2at^2
S = 20.2 + 1/2 (-10)(2)^2
S = 40 + (-20)
S = 20m (the maximum height)
18. the ball is....the boxA. inB. onC. toD. up
Jawaban:
in
Penjelasan:
karna in artinya di dalam
Jawaban:
a in
Penjelasan:
maaf kalau salah aku gak bisa bahasa Inggris
19. answer this question with complete sentece,1,what is thrown into the river?
Jawaban:
what is thrown into the river is.. ( yg di buang apa berdasarkan teks di bukumu)
Penjelasan:
Semangat!!
20. maria throws a ball straight up with an initial velocity of 10m/s?
Jawaban:
maria melempar bola lurus ke atas dengan kecepatan awal 10m/s
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