Ahunter wishes to cross a river that is 1.2 km wide and that flows with a speed of 4.7 km/h. the hunter uses a small powerboat that moves at a maximum speed of 12.7 km/h with respect to the water. what is the minimum time necessary for crossing?

0.095 hours = 5.7 mins

Explanation:

from the questions we are given the following:

distance (s) = 4.7 km/h

maximum speed of boat with respect to the water (S) = 12.7 km/h

speed of flowing water = 4.7 km/h

minimum crossing time =?

the minimum crossing time can be gotten from the formula

time =

in this question we would not be considering the speed of the flowing water because we were told to find the minimum time to cross with a boat moving at a maximum speed with respect to the flowing water

time =  

= 0.095 hours = 5.7 mins

grav forces affect all objects magnetic forces affect magnetic objects and electric currents

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.