An object in free fall from a height of 80 m on the ground with coefficient of restitution is 0,2, the speed of the reflected object is ... .
1. An object in free fall from a height of 80 m on the ground with coefficient of restitution is 0,2, the speed of the reflected object is ... .
[tex]e = \sqrt{ \frac{h'}{h}} [/tex]
[tex]0.2 = \sqrt{ \frac{h'}{80}} [/tex]
[tex](0.2)^2 = \sqrt{ \frac{h'}{80}}[/tex]
[tex]4. 10^{-2} = \frac{h'}{80} [/tex]
∴[tex]h'=3,2[/tex]
[tex]v= \sqrt{2.g.h'} [/tex]
[tex]v= \sqrt{2.3,2.10} [/tex]
[tex]v = \sqrt{64} [/tex]
[tex]v=8[/tex]
2. 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.
3. 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
4. 12. There is a ball... the chair1 poin5OInOOnO UnderBeside
Jawaban:
Under
Penjelasan:
Ada bola dibawah kursi
Jawaban:
under
maaf kalo salah
=================
5. Look at the picture. Choose the correct word.1.aС.Tennis ball is (smaller/bigger) than pingpong ballb. Pingpong ball is (smaller/bigger) than foot ballTennis ball is (smaller/bigger) than pingpong ball.d. The smallest ball is (pingpong ball, foot ball, tennis ball).The biggest ball is (pingpong ball, foot ball, tennis ball).2.lebinin beatlebih ringana. Foot ball is (heavier/lighter) than basket ball.b. Bowling ball is (heavier/lighter) than foot ball.c. Foot ball is (heavierlighter) than bowling balld. The heaviest ball is (bowling ball, foot ball, basket ball).The lightest ball is (bowling ball, foot ball, basket ball).le
Jawaban:
1D
maaf klo salah
cm 1 aja
6. A: where is the sedudo fall ? - B: It is in ..
A: where is the sedudo fall ?
B: It is in the Village District Ngliman Sawahan, Nganjuk regency, East Java
7. 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
8. (b) In a game of tennis, a player hits a stationary ball with his racquet,(0) The racquet is in contact with the ball for 6,0 ms, the average force on the ball duringthis time is 400 N.Calculate the impulse on the tennis ball.(ii) The mass of the ball is 0.056 kg.Calculate the speed with which the ball leaves the racquet.speed =
Jawaban:
bagaimana saya tahu jawabnya , sayakan ngga tau
9. During free fall, (a) it is (c) which is (c)being (d) is up to a full minute, a skydiver will fall at a constant speed of 120 m.p.h,
Jawaban:
which is
Penjelasan:
maaf kalau salaah
10. 38. The acceleration of free fall on the moon is 1,6 m/s and the acceleration of free fall oncarth is 10 m/s. A rock has a mass of 10 kg on earth. Calculate the weight of the rock:a. On earthmese b. On the moontolong di terjemahkan dlm bahasa indonesia
percepatan saat jatuh di bulan 1,6 dan percepatan jatuh di bumi 10, batu itu punya masa 10 kg. hitung massa batu di :
di bumidi bulanrumus : W = m. g
W = berat benda
m = massa
g = percepatan gravitasi
Percepatan jatuh bebas di bulan adalah 1,6 m/s dan percepatan jatuh bebas dikereta adalah 10 m/s. Sebuah batu memiliki massa 10 kg di bumi. Hitung berat batu
Sebuah. Di bumi
b. Di bulan
#semogamembantu
11. doyam seriam water fall is in
Jawaban:
doyam seriam water fall is in
air terjun doyam seriam ada di
Air Terjun Doyam Seriam yang ada di Desa Modang, Kecamatan Kuaro, Kabupaten Paser, Kalimantan Timur.
Penjelasan:
:)
#jadikan jawaban terbaik#
Jawaban:
air terjun seriam ada di desa modang kalmur ( Kalimantan Timur )
12. what is another name of potentialwhat is another name of potential what is another name for potential in English
Jawaban:
prospective, latent, inherent, dormant, possible
13. The ball is thrown to another side aktiv atau paasive
Jawaban:
aktif
Penjelasan:
Maaf kalo salah
#BrainlyTeam
Jawaban:
its an active sentence
14. 5.This is Rudi's ball.It is big.It is as ....It is .....It is the ...as Ronny's ball.than Jimmy's ball.ball in our class.
Jawaban:
Di Jelasin Dulu soalnya gimana?
Jawaban:
it is as big as Ronny's ball
it is bigger than Jimmy's ball
it is the biggest ball in our class
Penjelasan:
maaf kalau salah
15. 1 poin11. There is a ball .... (belakang)the cupboardBesideBehindoInOn
Behind
-
There is a ball BEHIND the cupboard
Artinya: ada sebuah bola di belakang lemari
16. The weight of an object on earth is 800n (g=10m/s2 on earth) that object is moved to another planet. Y with gy=8.5 m/s2. Then the ,ass and weight of object on planet y is...
Dit:w1=800N
g1 =10m/s2
g2=8.5 m/s2
Dit:w2=?
jawab: m=w/g
m=800/10
m=80kg
w2=m.g2
=80.8.5
=680N
17. 1. What planet rotates on its side like a ball rolling?2. What planet is the farthest from the sun?3. What is the largest planet in the solar system?4. What planet has rings that can be easily seen through a telescope?tolong dong mau disubmit
Jawaban:
1. Uranus
2. Neptunus
3. Jupiter
4. Saturnus
Penjelasan:
1. Planet Uranus diketahui berotasi seperti bola yang menggelinding termiring-miring sekitar 90 derajat, sementara planet lain berotasi seperti gasing yang berputar relatif terhadap bidang tata surya.
2. Neptunus merupakan planet terjauh dengan urutan dari yang terdekat. Merkurius, Venus, Bumi, Mars, Jupiter, Saturnus, Uranus, Neptunus.
beberapa waktu lalu terdengar kabar jika Pluto kembali dimasukkan kedalam jajaran planet, tapi informasi tersebut saya rasa masih kurang officially benar benar dikatakan kembali menjadi planet.
3. Jupiter atau Yupiter adalah planet terdekat kelima dari Matahari setelah Merkurius, Venus, Bumi, dan Mars. Planet ini juga merupakan planet terbesar di Tata Surya. Jupiter merupakan raksasa gas dengan massa seperseribu massa Matahari dan dua setengah kali jumlah massa semua planet lain di Tata Surya.
4. planet bercincin ini juga bisa dilihat dengan mata telanjang. Padahal memiliki jaraknya cukup jauh dengan Bumi. Planet ini akan terlihat seperti bintang tak berkedip yang berwarna kuning keemasan.
Saturnus biasanya muncul pada sore hari di langit selatan.
sekiranya begitu, semoga membantu
18. A boy hits a stationary billiard ball of mass 30 grams head on with a cue. The cue is in contact with the ball for a time of 0.001 s and exerts a force of 50 N on it. Calculate:a. The impulse on the ball on the direction of the forceb. Calculate the velocity of the ball just after it is struckc. Calculate the acceleration of the ball during the time it is in contact with the cue.d. Find the distance the ball reach in 9 s!
Diketahui:
m = 30 g = 0,03 kg
Δt = 0,001 s
F = 50 N
v1 = 0 m/s (mula2 bola diam)
Ditanyakan:
a) I?
b) v2?
c) a?
d) s?
Jawab:
a) Impuls
I = F x Δt
I = 50 x 0,001
I = 0,05 Ns
b) Kecepatan bola setelah tumbukan
I = ΔP
I = m x (v2 - v1)
0,05 = 0,03 x (v2 - 0)
0,05 = 0,03 x v2
0,05 / 0,03 = v2
5/3 = v2
v2 = 5/3 m/s
v2 = 1,67 m/s
c) Percepatan
a = (v2 - v1) / (t)
a = (1,67 - 0) / (0,001)
a = 1,67 / 0,001
a = 1670 m/s^2
d) Jarak tempuh
s = (v1 x t) + (1/2 x a x t^2)
s = (0 x 9) + (1/2 x 1670 x 9^2)
s = 0 + (835 x 81)
s = 67635 m
19. The statue displayed in the Museum last week ... now on display in another city.A. isB. showedc. showingd. was
Jawaban:
A.is
Penjelasan:
semoga bermanfaat
Jawaban:
d. was
Penjelasan:
karena kejadiannya sudah berlalu maka memakai simple past yaitu was
20. Niagara Fall is the name of a.......in america
Jawaban:
waterfall->air terjun
Jawaban:
Niagara Falls is the name of a waterfall in America
Penjelasan:
Air terjun Niagara adalah nama dari air terjun di Amerika
moga membantu, maaf kalo salah:>
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