A motorboat whose speed in still water is 2.91 m/s must aim upstream at an angle of 30.0 degrees (with respect to a line perpendicular to the shore) in order to travel directly across the stream.

Question

A motorboat whose speed in still water is 2.91 m/s must aim upstream at an angle of 30.0 degrees (with respect to a line perpendicular to the shore) in order to travel directly across the stream.
- What is the speed of the current?
- What is the resultant speed of the boat with respect to the shore?

bobpursley · Answer

current=2.91sin30=.. speed of boat across 2.91cos30

BIANCA · Answer

UN MUCHACHO QUE PESA 300N ESTA SENTADO
EN UN COLUMBIO CALCULAR LA FUERZA HORIZONTAL QUE ES NECESARIO EJERCER SOBRE EL MUCHACHO Y LA TENSION SOBRE LA CUERDAS QUE SOSTIENE EL COLUMBIO
SI FORMA UN ANGULO DE 30GRADO CON LA VERTICAL