How much time elapses before the two kittens collide

6.8 s

Explanation:

Let's say the west end of the field is position 0 m and the east end of the field is position 250 m.

The position of kitten A is:

x = 0 + 25 t

And the position of kitten B is:

x = 250 - 12 t

The kittens collide when they have the same position:

25 t = 250 - 12 t

37 t = 250

t ≈ 6.8 s

hèllo, sorry i really need some more points so if you need this qustion answered than retype it

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement