You are on the west bank of a river that is flowing north with a speed of 1.2 m/s. Your swimming speed relative to the water is 1.5 m/s, and the river is 60 m wide. What is your path relative to the earth that allows you to cross the river in the shortest time? Explain your reasoning.
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You are on the west bank of a river that is flowing north with
a speed of 1.2 m/s. Your swimming speed relative to the water is
1.5 m/s, and the river is 60 m wide. What is your path relative to the
earth that allows you to cross the river in the shortest time? Explain
your reasoning.
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- A helicopter blade spins at exactly 90 revolutions per minute. Its tip is 6.50 m from the center of rotation. (For each answer, enter a number.) (a) Calculate the average speed (in m/s) of the blade tip in the helicopter's frame of reference. m/s (b) What is its average velocity (in m/s) over one revolution? m/sAny assistance with this physics problem would be great!You have exactly 3 minutes 34 seconds to get to your next class on time and that classroom is 448 m east of where you are right now. First you run to your dorm room at an average velocity of 5.73 m/s to the south to pick up your calculator and your dorm room is 174 m south of where you were initially. What average velocity (magnitude only) do you now need to run from your dorm room to your classroom to arrive exactly on time? 2.62 m/s 2.91 m/s 2.25 m/s 5.73 m/s
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