The same day a fast train from Bergen starts at. 10.00 and drive towards Oslo with a smooth speed of 100 km/h.
a) When will the two trains meet?
b) How far from Oslo will the two trains meet?
Alan
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as a reference :Oslo = 0
Train A:
Since t = t
A = 80t +0
Train B
at 8:00 , t = 0
10:00 , train start travel 2 hours later
but it is 500 miles away from Oslo to start with.
B= 500 + -100(t-2)= -100t +200 +500
B = -100t + 700
when does A = B
80t= -100t + 700
180t = 700
t= 700/180 = 70/18 = 35/9 = 3 8/9 hours
3 8/9 hours = 3 + 8/9 hours = 3 hours +8/9*60 minutes
480/9 = minutes = 53.33333 = 53 minutes and 20 seconds
8:00 + 3 Hours + 53 minutes + 20 seconds
Time = 11:53:20
distance from Oslo
dist= 80t= 80*3 8/9 = 311 1/9 Miles
?
There distance between Oslo and Bergen is 500 km.
A regular train starts from Oslo
at 08:00 and drives towards Bergen at a steady speed of 80 km/h.
The same day a fast train from Bergen starts at 10.00
and drive towards Oslo with a smooth speed of 100 km/h.
a)
At 10:00 the distance between the two trains is 340 km.
The two trains will meet at 10 : 53 : 20
b)
The two trains will meet at a distance of 311.11.. km from Oslo.
sepia
There distance between Oslo and Bergen is 500 km.
A regular train starts from Oslo
at 08:00 and drives towards Bergen at a steady speed of 80 km/h.
The same day a fast train from Bergen starts at 10.00
and drive towards Oslo with a smooth speed of 100 km/h.
a)
At 10:00 the distance between the two trains is 340 km.
The two trains will meet at 10 : 53 : 20
b)
The two trains will meet at a distance of 311.11.. km from Oslo.