Question

12. Fill in the blanks :
(a) Birds and fishes have duple shaped body.
(6) We pour a drop of oil on the hings of door to
friction
(c) The substance which are used in machines to protect their surfaces
wear and tear caused by friction are called
(d) The friction always ............... the direction of motion.
(e) Spring balance is used to measure ............ of an object.
T
: please tell fast​

Answer 1

Answer:

a) so that they fly in the air with ease

b) to reduce friction

c)

d) changes

e) mass