Homework Statement
If you were trying to swim across a river with the shortest possible time, would you aim your body slightly upstream, directly across the river, or slightly downstream? Explain.
Homework Equations
no equation needed
The Attempt at a Solution
i feel the answer is downstream...
Homework Statement
a puck on the ice travels 20.0 m [5.0 degrees E of N], gets deflected, and travels 30.0 m [35.0° N of W]. Determine where the puck will end up with respect to its starting point, e.g., the puck's total displacement
Homework Equations
c^2=a^2+b^2-2abcosC
The Attempt at a...