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mit_hacker
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Homework Statement
A boat of mass 250KG is coasting, with its engine in neutral, through the water at 3.00 m/s when it starts to rain. The rain falls vertically and accumulates in the boat at 10Kg/hr. The drag on the boat is proportional to the speec of the boast in the form Fd=0.5v^2. What the acceleration of the boat just after the rain starts. Take the posititive x-axis to be along the direction of motion. Give your answer in meters per second.
Please help me! Thanks a lot for your help and continued effort. I really appreciate it.
Homework Equations
When the rain "just starts," Fd = 0.5 x 3 x 3 = 4.5N.
Thus, a = 4.5/250 = 0.018m/s^s. However, we need to write -0.018 since the acceleration will be opposite to direction of motion. Am I right? The answer to this question is not given so I need help determining whether I am right or not.
Thank-you very much for your time and effort!