Friction

Friction

Multiple Choice

A rolling ball comes to a stop without any visible force stopping it. What is this invisible force stopping the ball from rolling indefinitely?

• Friction

• Fiction

• Gravitational force

• Weight

Multiple Choice

Frictional force acts ________ to the surface.

• perpendicular

• parallel

Multiple Choice

Frictional force depends upon:

• A) Nature of both surfaces: Rough/smooth.

• B) Force with which two surfaces are pressed together.

• C) Area of surfaces in contact

• D) All the above

Multiple Choice

Frictional force may arise due to:

• A ) the roughness of surfaces

• B) attraction between molecules of the two sliding surfaces.

• Both A and B

Multiple Choice

• RIGHT

• LEFT

Multiple Choice

• towards right

• towards left