Circular Motion and Centripetal Force

What is uniform circular motion?

• Motion of an object in a straight path at a constant speed.

• Motion of an object in a straight path at a changing speed.

• Motion of an object in a circular path at a changing speed.

• Motion of an object in a circular path at a constant speed.

What is the centripetal force?

• The centripetal force is the force that acts on an object moving in a straight line.

• The centripetal force is the force that acts on an object moving away from the center of the circle.

• The centripetal force is the force that acts on an object moving in a spiral path.

• The centripetal force is the force that acts on an object moving in a circular path, directed towards the center of the circle.

In which direction does the centripetal force act?

• In a random direction

• Towards the center

• Away from the center

• Parallel to the center

What is the relationship between the radius of the circular path and the centripetal force?

• The centripetal force is unrelated to the radius.

• The centripetal force is directly proportional to the radius.

• The centripetal force is directly proportional to the square of the radius.

• The centripetal force is inversely proportional to the radius.

What is the unit of centripetal acceleration?

• km/s^2

• m/s

• km/h

• m/s^2

What happens to the centripetal force if the mass of the object increases?

• Decreases

• Remains the same

• Increases

• Becomes zero

Tags

NGSS.HS-PS2-1

What happens to the centripetal acceleration if the velocity of the object increases?

• The centripetal acceleration decreases.

• The centripetal acceleration remains constant.

• The centripetal acceleration becomes zero.

• The centripetal acceleration increases.

What is the direction of the centripetal acceleration?

• Away from the center of the circular path.

• Towards the center of the circular path

• Parallel to the circular path.

• Perpendicular to the circular path.

What is the difference between centripetal force and centrifugal force?

• Centripetal force acts outward, while centrifugal force acts towards the center.

• Centripetal force and centrifugal force are the same thing.

• Centripetal force is a gravitational force, while centrifugal force is a magnetic force.

• Centripetal force acts towards the center, while centrifugal force acts outward.