Understanding Circular Motion

What is the direction of the velocity of an object in circular motion at any given point?

• Opposite to the direction of motion

• Along the radius of the circle

• Towards the center of the circle

• Tangent to the circle

What is the role of the centripetal force in circular motion?

• It keeps the object stationary

• It decreases the mass of the object

• It changes the direction of the object's velocity

• It increases the speed of the object

In the context of circular motion, what is a common misconception about centrifugal force?

• It acts towards the center

• It is responsible for circular motion

• It is a real force acting outward

• It is the same as centripetal force

Which formula represents the centripetal force acting on an object in circular motion?

• F = m * v / r

• F = m * a

• F = m * v^2 / r

• F = m * g

How does increasing the velocity of an object affect its centripetal acceleration?

• It decreases the centripetal acceleration

• It reverses the direction of centripetal acceleration

• It has no effect on centripetal acceleration

• It increases the centripetal acceleration

What is the effect of shortening the string on the centripetal force in circular motion?

• It increases the centripetal force

• It decreases the centripetal force

• It has no effect on the centripetal force

• It reverses the direction of the centripetal force

What force keeps the moon in its orbit around the Earth?

• Gravitational force

• Centrifugal force

• Magnetic force

• Electrostatic force

What is the primary force that allows a car to turn on a circular track?

• Gravitational force

• Frictional force

• Air resistance

• Centrifugal force

How does banking a road help a car navigate a curve more effectively?

• It increases the gravitational force

• It reduces the frictional force

• It decreases the car's velocity

• It provides an additional centripetal force

What happens to a car on a slippery road if the frictional force is lost?

• It stops immediately

• It moves in a circular path

• It continues in a straight line

• It speeds up