Calculating Water Resistance for a Rowboat with Known Forces

AI Thread Summary
To calculate the water resistance on a 285 kg rowboat being pushed by a forward force of 112 N and accelerating at 0.120 m/s², apply Newton's Second Law, which states that net force equals mass times acceleration. The net force can be calculated as 285 kg multiplied by 0.120 m/s², resulting in 34.2 N. The water resistance can then be determined by subtracting the net force from the forward force, giving a resistance of 77.8 N. The discussion highlights the importance of understanding the relationship between force, mass, and acceleration in solving physics problems. The user successfully solved the problem and gained clarity on the concept.
uzboi
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Homework Statement


285 kg rowboat being pushed by a forward force of 112 N from the paddles. If its is accelerating at 0.120 m/s(squared) how much water resistance is it experiencing? (assume gravity and buoyancy cancel each other)

Given:
a = 0.120 m/s (2)
Forward force = 112 N
Mass = 285 kg



Homework Equations


unsure, just confused.


The Attempt at a Solution


Do not understand where to start.
 
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Start with Newton's Second Law. You know that the *net* force on the boat is equal to the mass times the acceleration. You know the acceleration. From this, you can figure out what the net force should be.
 
cepheid said:
Start with Newton's Second Law. You know that the *net* force on the boat is equal to the mass times the acceleration. You know the acceleration. From this, you can figure out what the net force should be.

Thanks. I got the answer and also understand it :D
 
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