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.
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?
1 answer
3 answers