Question

Motion in definite direction is known as
•Speed
•Velocity
•Acceleration​

Answer 1

Answer:

1. Speed :

In everyday And in kinematics, the speed of an

object is the magnitude of the change of its

position, it is thus a scalar quantity.the

average speed of an object in An interval of

time is the distance travelled by the object

divided by the duration of the interval, the

intantaneous speed is the limit of the average

speed as the direction of the time interval

approaches zero.

2. velocity :

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). velocity is a fundamental concept

in kinematics, the branch of classical

mechanics that describes the motion of

bodies.

3. acceleration :

In mechanics, acceleration is the rate of

change of the velocity of an object with

respect to time. accelerations are vector

quantities(in that they have magnitude And

direction). the orientation of An object's

acceleration is given by the orientation of the

net force acting on that object .