Question

JU WW Small
Des
USMENT ZONE
the friction between the
grooves or
the correct answer.
slipping
Choose
wear
spikes to increase
Athletes
1.
a.
electrostatic force
gravitational force
C.
It is difficult to walk on the ice floor because of the
b. muscular force
d. frictional force
friction.
irements.
low
a.
value of
eels and by polishing
. high
b. moderate
d. zero
spikes on the soles
Which of the following method is used to increase friction?
b. Using soap solution
d. Using rubber grip on cricket bats
3.
a.
Polishing
Lubrication
y surfaces.
C.
Which of the following unit can be used to measure friction?
handles
4.
(
a. N
N/m2
b. Pa
d. m²
C.
Use of lubricants makes the surface
5.
(
d. smooth
C. rough
b. shiny
d. both (a) and (b)
Which of the following is used to reduce friction?
6.
Ball bearing
a.
Set
of grooved tyres
b. Spikes in athletic shoes
d. Grinding stone
C.​

Answer 1

Answer:

Explanation:Answer. Explanation: Resource conservation means using the available resources carefully and giving them time to get renewed. Sustainable development means balancing our present needs of using resources without compromising the ability of future generations to meet their own needs.

Answer 2

Answer:

haan sona. ami bangla jaani. sorry last question ta onno keo answer kore diyechilo tai ami answer korte parlamna