foo9008 Messages 676 Reaction score 4 Thread starter Mar 22, 2016 #1 Homework Statement why the author gave the change in velocity as (25- 25cos115) , shouldn't it be final - initial velocity , which is (25cos115 -25) ? Homework EquationsThe Attempt at a Solution Attachments 126.PNG 10.7 KB · Views: 363 127.PNG 10.6 KB · Views: 373
Homework Statement why the author gave the change in velocity as (25- 25cos115) , shouldn't it be final - initial velocity , which is (25cos115 -25) ? Homework EquationsThe Attempt at a Solution
haruspex Science Advisor Homework Helper Insights Author Gold Member Messages 42,950 Reaction score 10,551 Mar 23, 2016 #2 foo9008 said: why the author gave the change in velocity as (25- 25cos115) , shouldn't it be final - initial velocity , which is (25cos115 -25) ? I agree. At that point, the author is calculating the force the vane exerts on the water, which with positive to the right should be negative.
foo9008 said: why the author gave the change in velocity as (25- 25cos115) , shouldn't it be final - initial velocity , which is (25cos115 -25) ? I agree. At that point, the author is calculating the force the vane exerts on the water, which with positive to the right should be negative.
