Answer:
100 miles
Step-by-step explanation:
Relative Speed: 60+40=100 mph
you can think that one train is stationary,another one is 100 mph
so one hour before the train pass each other，the distance is 100 miles
Answer:
29,500 g
Step-by-step explanation:
1 kg = 1000 g.
Answer:
your answer should be 90
Step-by-step explanation:
