Which one of the following is responsible for making things move or stop from moving?
a) Force
b) Weight
c) Mass
d) Acceleration
……….is a force between two surfaces that slow moving objects.
a) Momentum
b) Friction
c) Velocity
d) Acceleration
Friction always works………….
a) In the direction of movement of objects
b) In opposite direction of movement of object
c) Perpendicular to the direction of motion
d) None of these
Which one of the following surfaces causes more frictions?
a) Glass
b) Marble
c) Wood
d) Air
Friction is important as;
a) It is useful for us
b) It is harmful for us
c) It has advantage as well as some disadvantages
d) It is neither useful nor harmful
Which factor helps us to walk?
a) Shape of our shoes
b) Brand of our shoes
c) Friction between ground and shoes
d) None of these
