2006-09-21 17:16:33 · 10 answers · asked by gerardo V 1 in Education & Reference ➔ Homework Help
...a direction!
You can have a negative velocity, (if something is moving backwards) but speed is always positive (or 0) because it is a measure of the size of the velocity.
2006-09-21 17:18:24 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Speed is a scalar quantity which refers to "how fast an object is moving."
Velocity is a vector quantity which refers to "the rate at which an object changes its position." As such, velocity is "direction-aware." When evaluating the velocity of an object, one must keep track of direction. It would not be enough to say that an object has a velocity of 55 mi/hr. One must include direction information in order to fully describe the velocity of the object
2006-09-21 17:21:11 · answer #2 · answered by ynroh 3 · 0⤊ 0⤋
Speed is the scalar quantity, it measures how fast an object moves where as velocity is a vector quantity and it measures the movement of the object with respect to the direction of its movement.
2006-09-21 17:43:32 · answer #3 · answered by pooja 2 · 0⤊ 0⤋
Velocity is a vector quantity while speed is scalar.A vector quantity is one which has magnitude and direction while a scalar qnty has only magnitude.
So,velocity has to be in a particular direction.It may be +ve or -ve or 0(at rest) but speed is alwaz +ve or 0(at rest)
2006-09-21 17:47:18 · answer #4 · answered by Zeta 6 · 0⤊ 0⤋
speed with a specific direction is velocity.speed is a scalar and velocity is a vector.The notion of direction is very helpful when u want to resolve forces into components or any other application in higher physics.
speed is always +ve whereas velocity is +ve,-ve or zero
2006-09-22 00:06:26 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Speed:-
The rate of change in distance with respect to time.Since speed is built from distance, a scalar quantity, then speed is also a scalar quantity.This means it carries no direction information with it.
Velocity:-
The rate of change in displacement with respect to time.Since displacement is a vector quantity, then velocity is also a vector quantity.It has both magnitude and direction.
2006-09-21 20:15:59 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Speed has only magnitude, velocity has both magnitude and direction.
2006-09-25 12:01:00 · answer #7 · answered by moosa 5 · 0⤊ 0⤋
I believe it has a direction
2006-09-21 17:19:09 · answer #8 · answered by J 3 · 0⤊ 0⤋
they all absolutely right
2006-09-21 23:19:10 · answer #9 · answered by Anonymous · 0⤊ 0⤋
how fast and where to
2006-09-21 18:34:09 · answer #10 · answered by JitterBug589 3 · 0⤊ 0⤋