Question

a boy goes to his friends house with a constant speed v one and return with constant speed v two the average speed of the boy is
a) (v one +v two) /2
b) root v one v two
c) 2vone /(vone +v two)
d) v one v two

Answer 1

a) (v one +v two) /2

Answer 2

a) (v one +v two) /2 is correct answer