A boat moves through the water with two forces acting on it. One isa 2000 N forw

Question

A boat moves through the water with two forces acting on it. One isa 2000 N forward push by thewater on the propeller, and the other is an1300 N resistive force due to the wateraround the bow. (a) What is the acceleration of the 1500 kg boat?
m/s 2

(b) If it starts from rest, how far will it movein 9.0 s?
m

(c) What will its velocity be at the end of that time?
m/s (a) What is the acceleration of the 1500 kg boat?
m/s 2

(b) If it starts from rest, how far will it movein 9.0 s?
m

(c) What will its velocity be at the end of that time?
m/s

Explanation / Answer

(a) Whatis the acceleration of the 1500 kg boat?
m/s 2
Fexternal /mass=2000-1300/1500=7/15=0.467m/sec*sec

(b) If it starts from rest, how far will it movein 9.0 s?
m
s=0+1/2at*t=189/10=18.9m


(c) What will its velocity be at the end of that time?
m/s
v=at=4.2m/sec

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