A child in danger of drowning in a river is being carried downstream by a current that has a speed of 2.50 km/h. The child is 0.600 km from shore and 0.800 km upstream of a boat landing when a rescue boat sets out.
(a) If the boat proceeds at its maximum speed of 17.0 km/h relative to the water, what heading relative to the current should the pilot take?
__________° relative to the direction of the current
(b) What angle does the boat velocity make with the current?
__________° relative to the direction of the current
(c) How long does it take the boat to reach the child?
__________s
I have no idea how to do this. Could anyone help me?
Thanks.
2007-10-08 14:49:46 · 1 answers · asked by The Rationalist 2 in Science & Mathematics ➔ Physics
Once in the river, the boat approaches the child as if on a still pond at 17.0 km/hr
The direction is
Tan(th)=3/4 w/r/t the current for both a and b
c) The boat must travel 1 km at 17 km/hr to reach the child.
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2007-10-09 05:53:02 · answer #1 · answered by odu83 7 · 0⤊ 0⤋