Question

a car travels for three hours to a distant city 200km due east,what was it speed and velocity

Answer 1

Given Data:
Distance covered by a car = 200 km
Time = 3 hours
Speed= ?
Velocity = ?
Solution:
Since we know that,

Speed = Distance covered / Time taken
Substituting the values, we get:
Speed = 200 / 3
Speed = 66.67 km
Velocity will also be calculated by using the same formula
Velocity = Distance covered / Time taken
Velocity = 200 / 3
Velocity = 66.67 m/s
As we know that speed is a scalar quantity, so only magnitude is required which is already calculated.
But velocity is a vector quantity. Hence, both magnitude and direction should be calculated.
It is given that the car travels to a distant city due east. So its direction will be towards east and its magnitude is calculated as above.

Answer 2

The difference between speed and velocity is that speed has only magnitude it has no specific direction but velocity has magnitude as well as direction. In fact velocity of a body is its speed in a specified direction in a single straight line. Speed is a scalar quantity because it has magnitude only velocity is a vector quantity because it has magnitude as well as direction.

Solution:

Given:

Distance= 200 km

Time = 3 hrs

Speed= Distance/ time

Speed= 200/3 = 66.6666....

Speed= 66.67 km/hr(approx)

Velocity= 66.67 km/hr towards East.

==================================================================

Hope this will help you....