distance=relative velocity*time=(90+80)*time=2.71
time=2.71/170 hr
Two Metra trains approach each other on separate but parallel tracks. Train A has a speed of 90 km/ hr, train B has a speed of 80 km/ hr. Initially, the two trains are 2.71 km apart. How long will it take the two trains to meet?
2 answers
90T+80T = 2.71
T = 0.0159 hours = 0.96 min.
T = 0.0159 hours = 0.96 min.