# physics

posted by .

TWO LOCOMOTIVES APPROACH EACH OTHER ON PARALLEL TRACKS. EACH HAS A SPEED OF 95KM/H WITH RESPECT TO THE GROUNG. IF THEY ARE INITIALLY 8.5KM APART, HOW LONG WILL IT BE BEFORE THEY REACH EACH OTHER?

• physics -

The distance between them decreases at a rate of 190 km/h. The time required to reduce the spacing from 8.5 km to 0 is:
8.5 km/(190 km/h)= 0.04474 h = 2.68 minutes = 2 minutes and 41 seconds

## Similar Questions

1. ### math

two trains start from towns 208 miles apart and travel towards each other on parallel tracks. They pass each other 1.6 hours later. If one travels 10 mph faster than the other find the speed of each train?
2. ### science physics

Two locomotives approach each other on parallel tracks. Each has a speed of v = 95 km/h with respect to the ground. If they are initially d = 7.5 km apart, how long will it be before they reach each other?
3. ### math

a freight train that is 1 mile long is traveling at 60mph. a second train that is 2 miles long is traveling 40mph. the trains are moving in opposite directions on parallel tracks. how many seconds does it take between the time their …
4. ### math

at noon two planes leave at 3,377mi apart and are coming toward each other at a parallel line if one travels at 610mph and the other 618mph how long will it take to reach each other
5. ### Physics

Two planes approach each other head-on. Each has a speed of 765 km/h, and they spot each other when they are initially 11.0 km apart. How much time do the pilots have to take evasive action?
6. ### Physics

Two Planes approach each other head-on. One plane has a speed of 800 km/h and the other has a speed of 900 km/h and they spot each other when they are initially 15 km apart. How much time in seconds do the pilots have to take evasive …
7. ### physics

two metra trains are on separate but parallel tracks. One has a speed of 90 km/hr, the other 80 km/hr. Initially, the two trains are 2.71 km apart. How long will it take the two trains to pass each other?
8. ### AP Physics

Two locomotives approach each other on parallel tracks. Each has a speed of v = 85 km/h with respect to the ground. If they are initially d = 7.0 km apart, how long will it be before they reach each other?
9. ### Physics

Two trains approach each other on parallel tracks. Each has a speed of 20.0 km/hr with respect to the earth. If they are initially 18.0 km apart, how long (in seconds) will it be before they pass each other?
10. ### AP physics

Two locomotives approach each other on parallel tracks. Each has and average spend of 150 km/h with respect to the ground. If they are initialy 8.5 km apart, how Long will it be before they reach each other?

More Similar Questions