COL Revision: Rate & Speed (Q1) The Traveller's Route by Nur Johari Salleh https://padlet.com/nur_johari_salleh1/9rwhjihjas2q Post your solution here. Remember to include your names and index numbers here. en-us 2017-04-20 03:09:50 UTC 2017-04-27 04:46:40 UTC hello@padlet.com Damien, Wei Le, Hansen hansen_wee https://padlet.com/nur_johari_salleh1/9rwhjihjas2q/wish/167187273 (a) 25m/s * 3.6 = 90km/h

(b) 60km = 60000m
60000m / 25m/s = 2400s
2400s = 40minutes

120km * 80km/h = 1.5h

40 minutes + 1.5 hour + 35 minutes + 30 minutes = 195 minutes

(c) (60+120+52.5)km / 3.25 hour = 71 7/13 km/h ]]> 2017-04-20 06:57:21 UTC https://padlet.com/nur_johari_salleh1/9rwhjihjas2q/wish/167187273 Shaun (19), Hong Jie (11)and Silas (20) shaun_ho_zhi_wei https://padlet.com/nur_johari_salleh1/9rwhjihjas2q/wish/167187442 (a)Ans:90km/h
(b)60/90=2/3=40/60
     120/80=3/2=90/60=1 30/60
     1 30/60 + 40/60=1 70/60=2 10/60
     2 10/60= 2h 10min
     0830+2h 10min=1040                                                    Ans: 1040
(c)
25m/s---1500m/min
1500(35)=52500
52500m---52.5km
total distance/ total time --- 
(52.5km+60km+120km)/(30min+2h 10 min)
= 232.5km/2h 40min
=232.5km/160min
=1.453125km/h
~1.45km/h (3s.f)                                                            ans:1.45km/h

[Is must be a very slow drive - are you sure its correct? - r Johari]

]]> 2017-04-20 06:58:39 UTC https://padlet.com/nur_johari_salleh1/9rwhjihjas2q/wish/167187442 Ariel (2), Bryan (8), Lek Heng (9) chia_min_en_ariel https://padlet.com/nur_johari_salleh1/9rwhjihjas2q/wish/167187523 (a) 25m/s = 25 (m) ÷ 1(s)
                   = 0.025 ÷ 3600
                   = 90km/h

(b) 60km ÷  90km/h = 2/3h = 40min 
120km ÷  80km/h = 1 1/2h = 90min 
40 + 90 + 35 + 30 = 195min = 3 1/12h 
195min - 180 min = 15min 
3 1/12h = 3h 15 min
3h 15min after 0830 = 1145

(c) 60km + 120km + (90km/h x 7/12h) = 232.5km
232.5km ÷  3 1/12h = 75.405km/h 
]]> 2017-04-20 06:59:14 UTC https://padlet.com/nur_johari_salleh1/9rwhjihjas2q/wish/167187523 Adabel (1), Xing Zi (3), Wei Ning (7) weiningseah https://padlet.com/nur_johari_salleh1/9rwhjihjas2q/wish/167740678 a) 25m/s -- 60km 
1km --1000m
60 km x 1000m= 60000m
60000/25=2400
60km -- 2400s 
2400/60=40
(60/40)(60)=90
Ans:90km/h
b) 40min+90min+30min+35min=195min=3h 15min
08 30 + 3h 15min= 1145
Ans:1145
c)(60+120+52.5)km=232.5km
total time --   3.25 hour
Average speed: 232.5km / 3.25 hour =717/13km/h
Ans:717/13km/h
[not completed - Mr Johari]]]> 2017-04-24 05:21:37 UTC https://padlet.com/nur_johari_salleh1/9rwhjihjas2q/wish/167740678