Question

A ship is moving due east with a velocity of
, a truck is moving across on the ship with velocity
.A monkey is climbing the vertical pole mounted on the truck with a velocity of
.Find the velocity of the monkey as observed by the man on the shore

Answer 1

Answer:

This is a question on relative speed.

The speed of the truck relative to the speed of ship is :

4 + 12 = 16 m/s

The speed of the monkey relative to the speed of the truck :

This is a question on the resultant velocity of perpendicular velocity.

The velocity of the truck is perpendicular to the velocity of the monkey.

The relative velocity of the monkey is the hypotenuse velocity of the right angled formed.

This is given by pythagoras theorem :

3² + 16² = 265

Speed = √265 = 16.28 m/s

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