The Driver of a Motorboat That Can Move at 10

question 114

Short Answer

The driver of a motorboat that can move at 10 m/s in still water wishes to travel directly
across a river in which the current flows at 5.0 m/s.
(a) At what angle, measured from the upstream direction, should the driver head the
boat?
(b) How many minutes will it take to cross the river if it is 1.6 km wide at that point?

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Definitions:

Viscous Lava

Lava that has a high silica content resulting in a thick, slow-flowing consistency.

Mount St. Helens

Mount St. Helens is an active stratovolcano located in the Cascade Range of the Pacific Northwest, famous for its catastrophic eruption on May 18, 1980.

Magma

Liquid rock found under the Earth's surface that can harden and transform into igneous rocks.

Viscous Lava

Lava that has a thick, sticky consistency due to its high silica content, which causes it to flow slowly.