what is difference between velocity and speed??
Answers
The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of an object's speed and direction of motion (e.g. 60 km/h to the north).
Distance travelled per unit time
velocity :
• Velocity can be defined as the rate at which an object changes position in a certain direction.
• Vector quantity
•Velocity can be zero, negative, or positive.
• The velocity of the object changes with the change in direction, therefore the object must follow one direction.
•An object may possess different velocities but the same speed
•Velocity is measured in m/s
Speed :
•The rate at which an object covers a certain distance is known as speed.
•Scalar quantity
•Speed can never be negative or zero.
•The average speed will continue to count even if the object changes direction.
•Speed may or may not be equal to velocity.
•Speed is measured in m/s