Static Friction

Q. Which of the following statements is correct regarding friction acting on our foot while walking?

1. Static friction is acting opposite to the direction you're walking.
2. Static friction is acting in the direction you're walking.
3. Kinetic friction is acting in the direction you're walking.
4. Kinetic friction is acting opposite to the direction you're walking.

Q. Friction that acts when there is no relative motion, but only a tendency to move, between surfaces in contact is

1. sliding friction
2. static friction
3. rolling friction

Q. Identify if friction is acting in the following cases. If yes, what is the direction of friction?

1. No friction
2. Leftward
3. Rightward

Q. Choose the correct increasing order of magnitude for different types of friction.

1. Static, sliding, rolling
2. Rolling, sliding, static
3. Static, rolling, sliding
4. Rolling, static, sliding

Q. A ball rolling on ground comes to rest by itself after a while. Which force opposes its motion?

1. Muscular force
2. Magnetic Force
3. Frictional force
4. Gravitational Force

Q. What is kinetic and static friction

Q.

It is difficult to walk on ice because of:

1. absence of friction.
2. absence of inertia.
3. more inertia.
4. more friction.

Q. Pick the fluid that offers the highest friction.

1. Water
2. Oil
3. Honey
4. Petroleum

Q. Pick the fluid that offers the highest friction.

1. Water
2. Oil
3. Honey
4. Petroleum