Question

Two rains leave a train station at the same time. One travels east at 12miles per hour. The other train travels west at 7 miles per hour. In how many hours will the two trains be 114 miles apart

Answer 1

Hi there,
Add the two speeds together
= 180
Divide distance by 180
216/180 = 1.2 = 1 hour 12 minutes


Proof:
Eastbound train: Distance = Time x Speed
Eastbound = 114 miles
West bound train: Distance = Time x Speed
Westbound = 102 miles.
Added together = 216 miles.
Hope this helps :-)

Answer 2

Hi, what do you need help on?

Answer 3

:)
THANKS !

Answer 4

No problem!!! :)

Answer 5

As a part of a physics experiment, Ming drops a baseball from the top of a 330-foot building. To the nearest tenth of a second, for how many seconds will the baseball fall? (Hint: use the formula h = 16t^2, which gives the distance h, in feet, that a free-falling object travels in t seconds)

Answer 6

330 = 16 t^2 ?

Answer 7

am i right ?

Answer 8

The given information is that h = 305
We are looking for t

h = 16 * t^2
305 = 16 * t^2
19.0625 = t^2
t = 4.4 seconds

Answer 9

to the nearest tenth of a sec that was the missing part.. so i guess i was 90% right

Answer 10

thanks bro!

Answer 11

No problem!! :)