You are in an open field 72,0 m away from a straight river. a) A toy boat is flo

ID: 2982577 • Letter: Y

Question

You are in an open field 72,0 m away from a straight river.

a) A toy boat is floating down the river with a constant speed. You measure that

the distance between you and the toy boat is 97,0 m and decreases with 13,0cm/s How long does it take

before the toy boat will pass the point of the river closest to you?

b) You are now 136,0 m away from your tent you have set up 8,0 m from the river (on the same side as

you are). Before you go back to your tent, you will fill up the water bottle in the river. Which point on

river should go to so that the total trip to the tent should be as short as possible?

(you are still standing 72,0m away from the river)

i. 1.92 sec

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