Question

what is the similarities between speed and velocity​

Answer 1

Answer:

HERE U GO

Velocity is a vector quantity and has both magnitude and direction. Speed and velocity both represent a way to measure the change in position of an object relative to time. In fact, for a straight line motion, the speed and velocity of an object are the same (since distance and displacement will be the same).

PLZ BRAINLIEST

Answer 2

$\huge\bold\pink{Answer}$

★ Speed :-

Speed of a body is the distance travelled by the body per unit time.

$</p><p>\small\tt{\underline{\boxed{Average\: speed=\:{\frac{Total \: Distance\:Travelled}{Time\:Interval}}}}}$

Speed is donated by v. The distance travelled in an interval of time t is denoted by s ( or x)

Therefore, we may write

‎$</p><p> ‎ ‎ ‎‎‎ ‎\small\tt{\underline{\boxed{v \: =\: ‎‎‎{\frac{s}{t}}}}}$

The S. I. unit of speed is m/s ( or m s¯¹ & C. G. S. unit cm/s or ( or cm s¯¹). Another unit of speed is km/h or km h¯¹.

★ Changing the unit :-

$\bf \: 1 \frac{Km }{hr} = \frac{1000m}{60 \times 60 \: s} \: = \frac{5}{18 \: s}$

$Also, \: \bf \: 1m/s \: = 3.6km/h \:$

★ Velocity :-

As speed is related to distance so is velocity to displacement.

Velocity of a body is the displacement of a body per unit time.

$\small\tt{\underline{\boxed{velocity \: =\:{\frac{Displacement}{Time\:Interval}}}}}$

Since displacement is associated with direction, Velocity is also associated with direction.

The direction of velocity is m s¯¹ & in C. G. S. system is cm s¯¹. Other units of velocity are kmh¯¹, km, min¯¹ etc.

When the velocity of a body is not constant, then we find the average velocity for the given time interval.

$</p><p>\small\tt{\underline{\boxed{average \: velocity \: =\:{\frac{Displacement}{Time\:Interval}}}}}$

If a body covers equal displacements in equal intervals of time, howsoever small the time interval may be, the body is said to have uniform velocity.

★Note :

For a body to move with the uniform velocity, it's direction should remain the same . This means that the body should travel in a straight line and it should not reverse it direction of motion . Also the magnitude of velocity should remain constant. In such a case since distance = displacement, we can use the word speed also for referring to the magnitude of velocity .

If a body is not moving with constant velocity , then it is said to have a variable velocity or non- uniform velocity.

★ Note :-

a) Its magnitude changes but direction remains the same.

e.g., a train coming to halt on a straight track.

b) Its magnitude does not change but the direction of motion changes.

e.g., when a car takes a turn with its speed remaining constant.

c) Its the magnitude as well as the direction of motion changes .