bantu jawab yaTwo cars 720 kilometers apart travel toward each other. One car travels 70 kilometers per hour while the other car travelsat the rate of 50 kilometers per hour. In how many hours will they meet?
1. bantu jawab yaTwo cars 720 kilometers apart travel toward each other. One car travels 70 kilometers per hour while the other car travelsat the rate of 50 kilometers per hour. In how many hours will they meet?
Jawab:
Bahasa Indonesia =
Dua mobil berjarak 720 kilometer terpisah satu sama lain. Satu mobil melaju 70 kilometer per jam sedangkan mobil yang lain melaju dengan kecepatan 50 kilometer per jam. Dalam berapa jam mereka akan bertemu?
Penjelasan dengan langkah-langkah:
Jarak = 720 kmKecepatan = 70km/jam + 50km/jam = 120km/jamWaktu = J/K = 720/120 X 60 =360 MENIT : 60 = 6 jamBahasa Inggris =
Distance = 720 km Speed = 70km / hour + 50km / hour = 120km / hour Time = J / K = 720/120 X 60 = 360 MINUTES : 60= 6 hourssemoga membantu dan maaf jika jawaban saya salah
2. 5 A car travels 400 km in 3.5 hours. What is the speed of the car in km/h and m/s?
بِسْــــــــــــــــــمِ اللهِ الرَّحْمَنِ الرَّحِيْمِ
Is Known from the question
mileage (S )= 400 Kmtime (t )= 3,5 hoursAsked
Speed in Km/h =?
V = s/t
V = 400 km/ 3,5 hours
V= 114,2 km/h
speed in m/s ?
V = s/t
V = 400.000 m /12.600 S
V = 31 ,74 m/s
So, speed of the car in Km/h is 114,2 Km/h , and the speed of the car in m/s is 31 ,74 m/s
_______________
pembuktian
a. V = s/t
114,2 = 400/t
114,2 t = 400
t = 3,50 h
terbukti
b. V = s/t
31,74 = 400.000 /t
t = 12.600 s
terbukti
اَللَّهُمَّ صَلِّ عَلٰى سَيِّدِنَا مُحَمَّدٍ ﷺوَاٰلِهِ وَصَحْبِهِ وَسَلِّمْ
3. A car travels a distance of 540 km in 6 hours. what speed did it travel
Jawaban:
90 km/hour
Penjelasan dengan langkah-langkah:
540 km ÷6 hour= 90 km/hour
4. 1. A car has mass 800 kg moves with initial velocity 36km/hours. How long car moves if after travels long 150.0 m, it’s velocity becomes 72 km/hours ?.
males ah pen pulang gk usah sekolah
Vo = 36 km/h >> 10m/sVt = 72 km/h >> 20m/s
s 150m
(I) a = ...?
(II) t = ...?
(I)
Vt² = Vo² + 2as
(20)² = (10)² + 2a . (150)
400 = 100 + 300a
300a = 300
a = 1 m/s²
(II)
Vt = Vo + at
20 = 10 + (1) .t
t = 20 - 10 = 10s
5. A car travels 100km. The journey takes two hours. The highest speed of the car is 80km/ h, and the lowest speed is 40km/ h. What is the average speed for the journey ?
Jawaban:
Penjelasan:
contoh jangan lupa bintangi LANGKAH PERTAMA (I)
Ubahlah satuan waktu menjadi bentuk jam dengan menggunakan cara sebagai berikut :
1 menit = ¹/₆₀ jam → 12 menit = 12 × ¹/₆₀ jam = 0,2 jam
4 jam 12 menit = 4 jam + 0,2 jam = 4,2 jam
LANGKAH KEDUA (II)
Hitung jarak tempuh (s) mobil tersebut dengan menggunakan rumus sebagai berikut :
V = s/t
keterangan : v = kecepatan (km/jam)
s = jarak yang ditempuh (km)
t = waktu tempuh (jam)
Maka cara menghitungnya yaitu :
s = v × t
= 80 km/jam × 4,2 jam
= 336 km
∴ Kesimpulan jarak tempuh (s) mobil tersebut adalah 336 km.
b. Diketahui : Kecepatan rata rata (V) = 80 km/jam
Jarak tempuh (s) = 336 km
Ditanya : Waktu tempuh (t) ?
Jawab :
LANGKAH PERTAMA (I)
Hitung waktu tempuh (t) mobil tersebut dengan menggunakan rumus sebagai berikut :
V = s/t
keterangan : v = kecepatan (km/jam)
s = jarak yang ditempuh (km)
t = waktu tempuh (jam)
Maka cara menghitungnya yaitu :
t = s/v
= 336 km / 60 km/jam
= 5,42 jam
LANGKAH KEDUA (II)
Ubah satuan jam menjadi jam, menit, dan detik dengan menggunakan cara sebagai berikut :
1 jam = 60 menit → 0,42 jam = 0,42 × 60 menit = 25,2 menit
1 menit = 60 detik → 0,2 menit = 0,2 × 60 detik = 12 detik
Maka :
5,42 jam = 5 jam 25 menit 12 detik.
∴ Kesimpulan waktu tempuh (t) mobil tersebut adalah 5 jam 25 menit 12 detik.
6. 5. A motorcycle travels 105 km in 24 hours.Find the distance the motorcycle can coverin 1 hours 40 minutes?
Jawab:
7291,67 meter
Penjelasan dengan langkah-langkah:
Diketahui kecepaan motor adalah 105km/24jam
Ditanya seberapa jauh motor bergerak dalam 1 jam 40 menit?
Pertama, ubah dulu satuan kecepatannya menjadi meter/jam
105.000 m / 24 jam = 4375 m/jam
Ubah waktu ke satuan jam
1 jam 40 menit = 1 + 2/3 jam = 5/3 jam
Jika sudah diketahui kecepatannya perjam, tinggal cari jawaban
V=s/t maka s=V.t
s = 4375 x 5/3 = 7291,67 meter
semoga membantu
7. 1. a car travels a distance of 174km in 3 hours. what is it's average speed?2.how long will it take a train to travel 50km at an average speed of 40m/s ?? give your answer in minutes and secondstolong dibantu
Jawab:
1. average speed = total distance : total time
= 174 ÷ 3
= 58 km/h
2. distance = time × speed
50 km = time × 40 m/s
50000 m = time × 40 m/s
time = 50000 ÷ 40
= 1250 s
= (1250 ÷ 60) m
= 20m 50s
Penjelasan dengan langkah-langkah:
8. What is the avarage speed of a) A car that travels 400m in 20sb) An athlete who runs 1500 in 4 minutes
Jawaban:
a) A car that travels 400m in 20s
Penjelasan:
because car is fast
9. A car slows down from 16 m/s to 4 m/s in 6 s. What is the retardation of the car?
Jawaban:
-2 m/s²
Penjelasan:
a = 4-16
= -12 m/s
t = 6s
Retardation = -12/6 = -2 m/s²
10. 3. A car is travelling at a speed shown in the speedometer below. Which of the following statements is true? a) The car travels 65 km in 1 hour.b) The car travels 35 km in 1/2 hour. c) The car travels 30 km in 1/2 hour. d) The car travels 75 km in 1 hour. Repost soal ini dan mohon jawabin ya jika nada jawabin dengan penjelasan saya akan bikin jawaban nya sebagai brain list.
Penjelasan dengan langkah-langkah:
di gambar soal menunjukkan
angka 70 km/jam =
35km/½jam.
opsiB
Jawaban:
B
Penjelasan dengan langkah-langkah:
70km/ 1 hour ÷ 2
=70km/60 minutes ÷ 2
=35/30minutes
Maaf kalo gk ngerti
11. To visit his brother, Anto takes a car 11.37 kilometers and a train 15.25 kilometer. How many kilometers is Anto's journey in total?
Jawaban:
3,98
.................
12. a car travels at a speed of 55 km/h. find the distance travelled by the car in 12 minutes 30 seconds, giving your answers in metres.
Jawaban:
distance = speed * time
car speed is = 55kmph convert in m/sec
55×5/18≈15.27 m/sec (x×1000/3600=5/18)
=15.27×12.30
=188km the distance travelled by car
Penjelasan dengan langkah-langkah:
semoga membantu
13. A car travelled a distance of 240 km in 3 hours. The speed of the car was ?
Jawaban:
80 km/jam
Penjelasan dengan langkah-langkah:
RumusmencariKecepatan: jarak/waktu
MencariKecepatan== 240/3
== 80 km__________________________________
A car travelled a distance of 240 km in 3 hours. The speed of the car was ?
Terjemahan:Sebuah mobil menempuh jarak 240 km dalam waktu 3 jam. Kecepatan mobil tersebut adalah?
------------------------------------------------------------------
semoga membantu=maaf kalau salah
bantu follow.pliisss
jadikan jawaban tercerdas/terbaik.pliisss
terimakasih
14. 1. a car travels a distance of 174km in 3 hours. what is it's average speed?2.how long will it take a train to travel 50km at an average speed of 40m/s ?? give your answer in minutes and secondstolong dibantu
Jawaban:
1. 58 km/hour
2. 20 minutes and 50 seconds
Penjelasan:
1. Speed = Distance : Time
= 174 : 3
= 58 km/hour
2. Time = Distance : Speed
= 50000 : 40
= 1250 seconds
1250 : 60 = 20 minutes and 50 seconds
Note : yg aku bold itu 50 km dijadiin m ya soalnya kecepatannya satuannya m/s
15. Jane : … does our father drive the car? Mrs. Ross : He drives 45 kilometers per hours
Jane: How does our father drive the car?HOW does our father drive the car?
16. A car travels 120 km in 2 hours; find the speed of the carbantu kak pliss
Diketahui :
Jarak = 120 km
Waktu = 2 jam
Ditanya :Kecepatan = ...?
Jawab :Untuk mencari kecepatan, gunakan rumus =
Kecepatan = Jarak / Waktu
Kecepatan = 120 km / 2 jam
= 60 km/jam
17. A plane travels at a speed of 650 km/h. It can travel ____ in 6 hours.
Jawaban:
3.900 Km
Penjelasan dengan langkah-langkah:
650×6=3.900
semoga membantu
18. A particle travels 24.6 km in 30 minutes.Find the speed of the particlesin m/s
Jawab:
The speed is 49.2 km/hr.
Step-by-step explanation:
Given : A particle travels 24.6 km in 30 minutes.
To find : The speed of particle in km/h ?
Solution :
The distance is d=24.6 km
The time is t=30 minutes
Convert into hours :
1min = 1/60 hr
30 min = 0.5 hr
The speed formula is given by :
Speed : Distance/time
Speed : 24,6 / 0.5
Speed : 49,2 km/hr
#Learn more
https://brainly.in/question/11459948
Jawaban:
13,67 m/s
Penjelasan dengan langkah-langkah:
s = 24,6 km= 24600 m
t= 30 minutes= 1800 s
v=s/t
v=24600/1800
v=13,67 m/s
19. A train travels 400 km in 6 hours. How much time it will take to cover 800 km?
Jawaban:
800km : 400km/6jam = 800 x 6/400 = 4.800/400
= 12 jam
20. A cyclist is traveling at the speed of 15 kilometers per hour. Find the distance he travels in two hours.Ini Matematika inggris tolong harus kumpul sekarang
JAWABAN
per hour = 1 hour
1 hour = 15 kilometers
2 hours = 15 × 2 = 30 ✅
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