29. Distinguish between speed and velocity.
Answers
Answer:
Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. ... Velocity is the rate at which the position changes. The average velocity is the displacement or position change (a vector quantity) per time ratio.
Answer:
Definition
Velocity can be defined as the rate at which an object changes position in a certain direction.
The rate at which an object covers a certain distance is known as speed.
2 Type of quantity
Vector quantity
Scalar quantity
3 Magnitude
Velocity can be zero, negative, or positive.
Speed can never be negative or zero.
4 Change of direction
The velocity of the object changes with the change in direction, therefore the object must follow one direction.
The average speed will continue to count even if the object changes direction.
5 Interrelation
An object may possess different velocities but the same speed.
Speed may or may not be equal to velocity.
6 Unit (SI)
Velocity is measured in m/s
Speed is measured in m/s
7 Equation
= ∆x/∆t; where is the average velocity, ‘∆t’ is the time of arrival and ‘∆x’ is the displacement.
v = d/t; where ‘v’ is the average speed, ‘t’ is time taken to travel the distance and ‘d’ is the distance travelled.
8 Example