This looks so scary just because there are so many parts to it. Take them one at a time:
First piece: From rest, accelerates 1.8 m/s² for 15 sec. Speed at the end of the 15 sec = 1.8 x 15 = 27 m/s Distance covered = (average speed) x (time) = (13.5) x (15) = 202.5 meters
Middle piece: Starts this piece at 27 m/s. Runs at constant speed for 35 sec. Covers (27 x 35) = 945 meters Finishes this piece (15 + 35) = 50 seconds after leaving the first station Finishes this piece (202.5 + 945) = 1147.5 meters from the first station.
Last piece: Starts this piece 50 seconds after leaving the first station, 1147.5 meters from it, still moving at 27 m/s. Decelerates at 2.0 m/s² . --> It takes 27/2.0 = 13.5 seconds to come to a stop. --> Distance covered during this piece = (average speed) x (time) = (13.5 m/s) x (13.5 sec) = 182.25 meters Finishes this piece (50 + 13.5) = 63.5 seconds after leaving the first station Finishes this piece (1147.5 + 182.25) = 1,329.75 m from the first station
Distance between the stations (along the track) = 1,329.75 meters.
Average speed = (total distance) / (total time) = 1,329.75 / 63.5 = 20.941 m/s.
I sure hope I didn't make any stupid arithmetic blunders here, because I really don't feel like going back and checking it. Let me know, and I'll fix them.
The distance between the two stations is approximately 1329.75 meters, and the average speed of the train is about 20.94 m/s. The calculations were broken down into three parts: acceleration, constant speed, and deceleration. Each part's distance and total time were computed to find these values.
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daftar ayat Al-Ghashiyah (88:1–26) beserta titik-titik di mana muncul nun sakinah (نْ) atau tanwīn (ـً/ـٍ/ـٌ), dan hukum tajwīdn-nya:Ayat Kata dengan Nun Sakinah/Tanwīn Huruf Sesudahnya Hukum Tajwīd2 خَاشِعَةٌ و Idghām bighunnah (و termasuk huruf idghām ghunnah)3 سَائِرَةٌ ع Izḥār ḥalqī (ع salah satu huruf tenggorokan)3 حَامِيَةٍ أ Izḥār ḥalqī (ء salah satu huruf tenggorokan)4 مِنْ ع Izḥār ḥalqī (‘ayn tenggorokan)5 بَرْدًا و Idghām bighunnah (و huruf idghām ghunnah)6 حَمِيمًا و Idghām bighunnah (و huruf idghām ghunnah)6 غَسَّاقًا ل Idghām bilā ghunnah (Lām idghām tanpa ghunnah)7 جَزَاءً و Idghām bighunnah (و huruf idghām ghunnah)9 رَبِّهِمْ م Idghām bighunnah (Mīm idghām ghunnah)16 عُدْوَانَهُ أ Izḥār ḥalqī (ء tenggorokan)18 رَاضِيَةً م Idghām bighunnah (Mīm idghām ghunnah)18 مَرْضِيَّةً ف Ikhfā’ (Fā’ termasuk 15 huruf ikhfā’)24 نَاعِمَةٌ ف Ikhfā’ (Fā’ huruf ikhfā’)25 جَنَّةٍ ع Izḥār ḥalqī (‘ayn tenggorokan)25 نَعِيمٍ ف Ikhfā’ (Fā’ huruf ikhfā’)Penjelasan singkat hukum bacaan1. Izḥār Ḥalqī: jelas dibaca, tanpa ghunnah, ketika nun/tanwīn bertemu salah satu huruf tenggorokan (ء / ه / ع / ح / غ).2. Ikhfā’: samar (menghilangkan jelasnya “n”-nya), dengan dengung (ghunnah), ketika bertemu salah satu dari 15 huruf ikhfā’ (ت ث ج د ذ ز س ش ص ض ط ظ ف ق ك).3. Idghām bighunnah: “n” berpadu ke huruf berikutnya, disertai dengung, pada huruf ي / ن / م / و.4. Idghām bilā ghunnah: berpadu tanpa dengung, pada huruf ل / ر.Semoga membantu memperkaya bacaan dan memahami tajwīd Surat Al-Ghashiyah ayat 1–26!