Achild in danger of drowning in a river is being carried down-stream by a current that flows uniformly with a speed of 2.20 m/s . the child is 500 m from the shore and 1100 m upstream of the boat dock from which the rescue team sets out.

if their boat speed is 7.30 m/s with respect to the water, at what angle from the shore must the boat travel in order to reach the child?

The angle is 65.6°.

Explanation:

Given that,

Speed = 2.20 m/s

Distance from the shore= 500 m

Distance from the bottom= 1100 m

Speed of boat = 7.30 m/s

According to figure,

We need to calculate the angle with shore

Using formula of angle

Put the value into the formula

We need to calculate the angle

Put the value into the formula

Hence, The angle is 65.6°.

1/0.14nm = 10^10/1.4 a lot

massxgravity x heght=weightxheight= pe

4900=490xh

h=10