Answer:
18.25 units
Step-by-step explanation:
We are given that
The position of object A=

The position of object B=

We have to find the distance between object A and object at time t=3.00 s
Substitute t=3 s


The distance between A and B

The magnitude of distance between A and B

Using the formula magnitude of position vector
r=xi+yj+zk
