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Can a body have constant speed as well as variable velocity?
No, constant speed implies that the body is moving at a consistent rate, while variable velocity means the direction of motion is changing. It is not possible for a body to have both constant speed and variable velocity simultaneously.
Why is the acceleration of a body moving uniformly in a circle directed towards the centre?
The acceleration of a body moving uniformly in a circle is directed towards the center of the circle because it is constantly changing direction due to the change in velocity (even though the speed is constant). This change in direction results in a centripetal acceleration that keeps the body moving in a circular path.
What is the condition in which a body moving with uniform speed has a variable velocity?
The condition in which a body moving with uniform speed has a variable velocity is when the direction of motion changes even though the speed remains constant. This means that the object is accelerating, even though its speed does not change.
Why is acceleration of a body moving uniformaly in a circle directed toward the centre?
The acceleration of a body moving uniformly in a circle is directed towards the center because the velocity of the body is constantly changing direction, even though its speed remains constant. This change in direction of the velocity results in a centripetal acceleration that is required to keep the body moving in a circular path.
Can an objeact have constant speed and but variable velocity?
No, if an object has constant speed, its velocity must also be constant. Velocity is a vector quantity that includes both speed and direction. If the speed is constant, the direction must also be constant for the velocity to be constant.
