Question

plz answer Kardo
class9 ch Motion​

Answer 1

Answer:

Q12) Answer is (iv) A is false but R is true.

Well, actually we can say that R is incorrect because the measure of displacement over unit time is called velocity, but A is definitely incorrect because speed is a scalar quantity, so I prefer Option (iv) to be the correct answer here.

Q13) (1) Distance = $\frac{1}{2} \pi r\left$

Displacement = r

(2) Distance = 2d (2 x Distance)

Displacement = 0