physics

In an unaccelerated reference frame, the force is not equal.

• True

• False

Friction allows walking, running, and braking.

• True

• False

Friction is a special force between two surfaces

• True

• False

Kinetic friction occurs when the object is in motion.

• True

• False

Friction depends on the materials, so each surface is unique.

• True

• False

Kinetic frictional force opposes the motion of the system of interest.

• True

• False

Kinetic friction is usually dependent on the relative speed of the object.

• True

• False

A car parked on a hill is an example of static friction.

• True

• False

Sliding force tends to use cosine.

• True

• False

Jersey barriers provide the right angle and deflect light.

• True

• False