Asked by Dana
A blue train is 500m long and is travelling at 58km/h. A yellow train is 400m long and is travelling at 32km/h. The trains are travelling towards each other. Ooriginally, the trains are 900km apart.
A) how long will it take for the 2 trains to reach each other?
B) how many seconds after the front parts of the trains meet, will their rear parts pass each other?
A) how long will it take for the 2 trains to reach each other?
B) how many seconds after the front parts of the trains meet, will their rear parts pass each other?
Answers
Answered by
Henry
A. 58 * t + 32 * t = 900 km.
90t = 900, t = 10 Hours.
B. V1 = 58km/h = 58,000m/3600s = 16.11 m/s.
V2 = 32km/h = 32,000/3600s = 8.89 m/s.
V1*t + V2*t = 900 m.
16.11t + 8.89t = 900, t = 36 s.
90t = 900, t = 10 Hours.
B. V1 = 58km/h = 58,000m/3600s = 16.11 m/s.
V2 = 32km/h = 32,000/3600s = 8.89 m/s.
V1*t + V2*t = 900 m.
16.11t + 8.89t = 900, t = 36 s.
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