2006-12-06 00:52:56 · 5 answers · asked by astalavista 1 in Science & Mathematics ➔ Mathematics
speed=distance/time=110km/(55/60)hr
=110*60/55 kmph
=120 kmph
in m/sec
120*5/18=33.3 m/sec
2006-12-06 00:59:18 · answer #1 · answered by raj 7 · 0⤊ 0⤋
110Km = 110,000m
1 min = 60 sec, 55mins = 3300sec
If the train travels at *constant* speed (presumably, meaning the driver doesn't delay or stop for ten minutes for NO good reason) ideally then in 60mins = 1 hour it would travel the distance of 120Km, therefore
a) Speed is 120 km/h
b) Simpy convert known units in the measurements you need, ie,
110,000 m / 3300 sec
Speed is 33.33 m/s (goes on)
Alternatively, use the finds of a) as follows:
Speed = 120 km / 1 h = 120.000m / 3600 sec = 33.33 m/s
1 h = 3600 s.
Good luck.
2006-12-06 09:04:43 · answer #2 · answered by Derek K 2 · 0⤊ 0⤋
110 km/55 sec = 2 km/sec(60sec/min)(60min/hr)=7200 km/hr.
2 km/sec(1000m/km) = 2000 m/sec.
I used a system of unit cancellation to get the correct units. Have a great holiday season!
Eds
2006-12-06 09:03:32 · answer #3 · answered by Eds 7 · 0⤊ 0⤋
110/(55/60) = 120 km/h
(110*1000)/(55*60) = 33.33 m/s
2006-12-06 09:00:30 · answer #4 · answered by Andy M 3 · 0⤊ 0⤋
120km/hr and 99.9m/s
2006-12-06 08:57:08 · answer #5 · answered by Anonymous · 0⤊ 1⤋