Question

A body goes 24 km north and then 7 km due east in 2.5 hours. Find its Velocity​

Answer 1

Answer:

• Total displacement will be the hypotenuse of two north and east sides.
• The velocity is the time rate of change of displacement. If 'S' is the displacement of an object in some time 'T', then the velocity is equal to, v = S/T. The units of velocity are m/s or km/hr.

Displacement=hypotenuse

(hypotenuse)²= (side 1)²+(side 2)²

(Hypotenuse)²=(24)²+(7)²=576+49

=625

Square root both sides

Hypotenuse=√625

=√25×25

Hypotenuse=25

Displacements=25

Velocity=Displacement/Time

v = S/T

v=25/2.5

v=10

Velocity = 10

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