Answer:
it started to move a 1 second
Answer:
option b
Explanation:
from the given formula, s=d/t
make t the subject of the formula we have
t=d/s
5/100
0.5
1.commensalism
2. pred-prey
3. parasite-host
4.commensalism
Answer:

Explanation:
We can use the conservation of momentum. The initial momentum is equal to the final momentum:
x-coordinate

(1)
y-coordinate

(2)
We can divide equations (2) and (1):



I hope it helps you!
My guess is A. I'm not 100% positive but i'm pretty sure.