Question

Which of the following statement is incorrect ➡️ Friction act on a ball rolling along the ground. ➡️ Friction act on a boat moving on water. ➡️ Friction act on bicycle moving an a smooth road.

Answer 1

Answer:

the incorrect statement will be friction act on a boat moving on water

Answer 2

Answer:

c) friction acts on bicycle moving on a smooth road

Explanation:

• friction always acts on the rough surface having some coefficient of friction.

• on smooth surface coefficient of friction is zero so friction will be zero.

• friction= normal force × coefficient of friction