Question

part #2: types of forces

1. friction - a force that ______ motion (occurs between two surfaces that are in contact)

● friction always occurs in the ______ direction than the force applied.
20 n
will this object move?
friction = 15 n
● heavier objects and rougher surfaces produce ______ friction
● types of friction

1. kinetic friction - friction between ______ surfaces
2. static friction - a force that keeps an object in ______ (not moving); ex. a parked car does not move

Explanation:

Friction opposes motion. It acts in the opposite direction of the applied force. If the applied force (20 N) is greater than the frictional force (15 N), the object will move. Heavier and rougher - surfaces lead to more friction. Kinetic friction is between moving surfaces and static friction keeps an object at rest.

Answer:

1. opposes
2. opposite
3. Yes
4. more
5. moving
6. place (or at rest)