Question

When a body is said to have (i) uniform velocity, (ii) uniform speed, (iii) variable velocity and (iv) variable speed

Answer 1

Answer :

1. If there is a constant rate of change of displacement per unit time, then the velocity is said to be uniform.
2. If there is constant rate of change of distance travelled per unit time, the speed is said to be uniform.
3. If there is no constant rate of change of displacement per unit time, then the velocity is said to be variable.
4. If there is no constant rate of change of distance per unit time, then the speed is said to be variable.

Additional Information :

• Distance if the total length of the path travelled by the body.
• Displacement is the shortest distance between the initial position and the final position of the body.
• Speed is the distance travelled per unit time.
• Velocity is the total displacement per unit time.
• Distance is a scalar quantity.
• Displacement is a vector quantity.
• Speed is a scalar quantity.
• Velocity is a vector quantity.