Question

Choose the correct statement

1 point

(a) A body can be accelerated by frictional force

(b) There can be zero friction

(c) Kinetic friction is greater than rolling friction

(d) Frictional force and area of contact between the two surfaces are proportional.

Answer 1

Answer:

there can be zero friction

Answer 2

Answer:

d)frictional force and area of contact between the two surface are proportional