A high speed train travel 1870 km from town A to town B at a speed of 220 km/h if the train set of to station A at 12.30.Find the time when the train arrive at town B?
1. A high speed train travel 1870 km from town A to town B at a speed of 220 km/h if the train set of to station A at 12.30.Find the time when the train arrive at town B?
Kereta kecepatan tinggi menempuh jarak 1870 km dari kota A ke kota B dengan kecepatan 220 km / jam jika kereta berangkat ke stasiun A pukul 12.30. Cari tahu kapan kereta tiba di kota B?
Waktu
= Jarak : Kecepatan
= 1870 km : 220 km
= 8,5 jam
= 8 jam 30 menit
Kereta tiba di kota B
= 12.30 + 08.30
= 21.00
2. It took a train travel 375 km in 2 hours. what is the average speed of the train?
Jawab:
187,5 km/h
Penjelasan dengan langkah-langkah:
jarak 375km
waktu 2jam
jawab
kecepatan rata-rata= [tex]\frac{jarak tempuh}{waktu tempuh}[/tex]
=[tex]\frac{375}{2}[/tex]
=187,5 km/h
3. A maglev train initially moves at speed of 54 km/hour. If the train accelerates at 5 m/s² the train reaches the maximum speed of 253 km/hour after it move for ... second.
vo = 54 km/jam
= 54 000 m/ 3600s
= 15 m/s
a = 5 m/s2
vt = 252 km/jam
= 252 000 m/ 3600s
= 70 m/s
____________________
t ?
vt = vo + ( a . t )
t = ( vt - vo ) / a
= ( 70 - 15 ) / 5
= 55 / 5
= 11 second ( s )
4. A train of length 250 m travelled through a tunnel at a constant speed of 18 m/s. It took 1 minute 45 seconds for the entire train to pass through the tunnel. What is the length of the tunnel in kilometres?
Jawaban:
The length of the tunnel in kilometers is 0,25 Km
Semoga membantu
5. A high-speed train travels at a speed of 200 km/h. If the train sets off from Station A st 1224 hours, and reaches Station B at 1412 hours, find the distance between the two stations, giving your answer in metres.
The distance between station A and station B is 360.000 m
.
PembahasanPertanyaan di atas dapat diselesaikan dengan rumus di bawah ini.
Kecepatan
[tex] k = \frac{j}{w} [/tex]
.
Jarak
[tex] j = k \times w [/tex]
.
Waktu
[tex] w = \frac{j}{k} [/tex]
.
Keterangan
k=Kecepatan
j=Jarak (meter atau satuan panjang yang lain)
w=Waktu (menit atau satuan waktu yang lain)
.
PenyelesaianDiketahuiVelocity=200 km/h
.
DitanyaThe distance between station A and station B is... m
.
JawabTime=
14.12
12.24
_____-
01.48=1 hour 48 minutes=108 minutes
.
Distance=
[tex]j = k \times w[/tex]
[tex]j = \frac{200 \: km}{h} \times 108 \: minutes[/tex]
[tex]j = \frac{200 \: km}{60 \: minutes} \times 108 \: minutes[/tex]
[tex]j = \frac{200 \: km}{5} \times 9[/tex]
[tex]j = 40 \: km \times 9[/tex]
[tex]j = 360 \: km[/tex]
[tex]j = 360.000 \: m[/tex]
.
So, the distance between station A and station B is 360.000 m
.
Pelajari Lebih LanjutMateri mengenai kecepatan, skala, debit dapat dipelajari di link berikut:
Contoh soal serupa: brainly.co.id/tugas/25985010Materi mengenai jarak tempuh: brainly.co.id/tugas/14636599Materi mengenai waktu tempuh: brainly.co.id/tugas/11875671.
===================================
Detail JawabanKelas: 5
Mapel: Matematika
Kategori: Kecepatan, skala, debit
Kode: 5.2.2
Kata kunci: Jarak, kecepatan, waktu
6. the distance travelled by a train is 180 km. If the average speed of the train is increased by 10 km/h,the time taken by the train would be 15 minutes less.find the average speed of the train
Jawaban:
1 hour = 60 minutes
180km 60 minutes = 3km/min
60 minutes + 20 minutes = 80 minutes
3km x 80 minutes = 240km/80 minutes
Penjelasan dengan langkah-langkah:
sorry if wrong7. 68. Why is the following situation impossible? A freight train is lumbering along at a constant speed of 16.0 m/s. Behind the freight train on the same track is a passen- ger train traveling in the same direction at 40.0 m/s. When the front of the passenger train is 58.5 m from the back of the freight train, the engineer on the pas- senger train recognizes the danger and hits the brakes of his train, causing the train to move with accelera- tion 23.00 m/s2. Because of the engineer's action, the trains do not collide.
Jawaban:
Jawabannya
Penjelasan:
Maaf kalo salah
8. Cheetahs able to reach a speed of 4120 km/hr or Cheetahs can reach a speed of 4120 km/hr
Jawaban:
Cheetahs can reach a speed of 4120 km/hr
Penjelasan:
semoga membantu <3
9. 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:
10. 1.A train travels 16.8 km in 25 minutes . Find the speed of train in :(i) km/h(ii) m/sNote :-Jawab jangan ngasal kalau ngasal nanti bakal di lapor ke pihak brainly
Jawaban:
(i). Speed = 40,32 km/h
(ii). Speed = 1,12 m/s
Penjelasan dengan langkah-langkah:
V = Speed
s = distance
t = time
1 minute = 1/60 hour
25 minutes = 25 × 1/60 hour
= 5/12 hour
V = s/t
= 16,8 km / 5/12 hour
= 16,8 × 12/5
= 40,32 km/hour
(i). Speed = 40,32 km/h
(ii). 1 km/h = 1/36 m/s
Speed = 40,32 km/h
40,32 km/h = 40,32 × 1/36 m/s
= 1,12 m/s
So, Speed = 1,12m/s
11. 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
12. A train travelled 69 km in 1/2 h. At what speed was it travelling?
Jawaban:
Dik : jarak yang ditempuh = 69 km
waktu yang diperlukan = 1/2 jam
maka kecepatan :
138 km / jam
semoga membantu
13. A high-speed train travels at a speed of 200 km/h. if the train sets off from station a st 1224 hours, and reaches station b at 1412 hours, find the distance between the two stations, giving your answer in metres
Jawab:
37600 km or 37600000 meters
sorry if i wrong
Penjelasan dengan langkah-langkah:
14. The train is 100 M long and it takes 30 seconds to cross the 400 M bridge. What is the speed of the train?
s=100+400=500. t=30
v=s/t=500/30=16⅔ M/sec
15. a train running between two stations 50km apart arrives on time if it travels at an average speed of 60 km/h. How late will it be if it travels at an average speed of 50 km/h?
On time :
s=50 Km
v=60km/h
t = s : v
= 50Km : 60Km/h
= 5/6 h
Late :
s=50Km
v=50Km/h
t = s : v
= 50Km : 50Km/h
= 1h
1h - 5/6h = 1/6h
1/6h = 1/6 x 60min = 10min
At an average speed of 50Km/h, the train will be 10 minutes late.
16. 10. a train leaves station a at 10.56 pm and arrives at station 8 1 hour 32 minutes later. find the speed of the train if the distance between station a and station b is 161 km.ngasal report
time = 1 hour 32 minutes = 1,533 hours
distance = 161 km
[tex]speed=\frac{distance}{time}\\\\speed=\frac{161\,km}{1,533\.hours}\\\\speed=87,5\,km/h[/tex]
17. What is the importance of gaps that are found at regular intervals along MRT tracks A: The gaps prevent the rails from buckling on hot days B:The gaps enable the MRT train to move at a higher speed C:The gaps enable the MRT train to move at a higher speed D:The gaps reduce the sound produced when the MRT train is moving
Jawaban:
D:The gaps reduce the sound produced when the MRT train is moving
semoga terbantu, kalau salah maaf
18. a man travelled from kedondong city to tanjung city by train he started at 07.00 and arrived in tanjung city at 09.30 find the speed of the train of the distance of kedondong city to tanjung city is 360 km
Jawaban:
40 m/s
Penjelasan dengan langkah-langkah:
given that:
time (t) = 09.30 - 07.00
= 2 hours 30 minutes = 2.5 hours
distance = 360 km
asked: speed?
answer:
speed = distance/time
= 360 km/2.5 hours
= 144 km/hour
= 40 m/s
19. 7. What is the writer's objective ofwriting the text?A. To announce the launching ofthe D-90 trains.B. To announce the date of theopening of D-90 train service.C. To announce the purchase ofthe D-90 train tickets.D. To announce the opening of thesales of the D-90 train tickets.E. To announce the new D-90services for middle and longdistances.
Jawaban:
D. to announce the opening of the sales of the D-90 train tickets
Semoga terbantu, jan lupa jadiin jawaban tercerdas yak✌
20. The safe radius, v m/s, at which a train can round a curve of radius r is directly proportional to the square root of r. It is given that the safe speed at which a train can round a curve of radius 256 m is 80 m/s. find the safe speed if the curve has a radius of 225 m.
since safe velocity (v) is directly proportional to the square root of radius (r), so we can conclude that
[tex]
v=c\cdot\sqrt{r}
[/tex]
whereas [tex]c[/tex] is particular constant related to the equation.
Now, by substituing [tex]v=80[/tex] and [tex]r=256[/tex] we will find out the constant [tex]c[/tex]
[tex]
\begin{aligned}
v&=c\cdot\sqrt{r}\\
80&=c\cdot\sqrt{256}\\
80&=c\cdot16\\
\therefore c&=5
\end{aligned}
[/tex]
Now, for [tex]r=225[/tex] m, we have
[tex]\begin{aligned}
v&=c\cdot\sqrt{r}\\
&=5\cdot\sqrt{225}\\
&=5\cdot15\\
&=75
\end{aligned}[/tex]
So, the safe velocity for radius 225 m is 75 m/s
____
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