Question

please fast class 11​

Answer 1

Answer:

velocity is a rate of change of a displacement of a body in unit time it is know as velocity

S. I unit m/ s

Answer 2

Answer:

step by step ans

Explanation:

(a) Velocity of a body is the distance traveled by it per unit time in a given direction. SI unit of velocity is m/s.

(b)

(i) Speed is a scalar quantity whereas velocity is a vector quantity.

(ii) Speed of a body is distance traveled by it per unit time whereas velocity of a body is the distance traveled by it per unit time in a given direction.

(iii) Speed is always positive whereas velocity can be both positive as well as negative.

(c) Speed =54km/h

=54×

3600

1000

=15 m/s