Need help with this prblem!!!

[12tolcaj]

A baseball diamond is a square 90ft on a side. Chris is running from second base to third base at 20ft/s. Sam is running from third base to home plate at 15 ft/s. When Chris is 30ft from third and Sam is 40 ft from third, is the distance between them increasing or decreasing? At what rate? can you show me the whole process... im confused

 

[Deleted member 4993]

A baseball diamond is a square 90ft on a side. Chris is running from second base to third base at 20ft/s. Sam is running from third base to home plate at 15 ft/s. When Chris is 30ft from third and Sam is 40 ft from third, is the distance between them increasing or decreasing? At what rate? can you show me the whole process... im confused

Put the origin at the third base - x-axis along the line 3→2 and y-axis along the line 3→home.

So

Chris is running along the x-axis - in the negative direction, and,

Sam is running along the y-axis - in the positive direction,

Now what...

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