Question

If a snail crawls 12 cm in 60 s then it's average speed in mm s^-1 is 

A. 2 mm s^-1 

B. 5 mm s^-1 

C. 10 mm s^-1 

D. 20 mm s^-1

Answer 1

The Correct option is  A. 2 mm s^-1

Answer 2

The correct option is (A) 2mm s^-1.

Given total distance = 12 cm

= .12 m

total time + = 60 sec 

average speed = \(\cfrac{total \,distance}{total \,time}\)

= \(\cfrac{.12}{60}\)

= .002

v = 2 mm/s