Uniform Circular Motion

When an object is in circular motion it is constantly changing its velocity.

• True
• False

Tags

NGSS.HS-PS2-1

The velocity of the object moving in a circular path is always _____ to the line of a circle.

• outwards

• towards the center

• tangent

• faster

Which statement is true about an object that is traveling in uniform circular motion?

• The speed of the object varies.
• The net force on the object is directed toward the center of the circular path.
• The direction of the object's velocity is constant.
• The net force on the object is directed away from the center of the circular path.

Tags

NGSS.HS-PS2-1

Centripetal acceleration always points

• in the direction of the object's motion
• in the opposite direction of the object's motion
• towards the center of the circle
• towards the outside of the circle

What is the direction of the velocity at point A, if the ball is revolving clockwise?

• up
• right
• down
• left

When an object is moving in a circle, its linear velocity is often called as __________ velocity.

• centripetal

• tangential

• gravitational

• centrifugal

What happens to the centripetal force exerted on an object if you triple the velocity?

• it increases to 3X
• it decreases to 6X
• it increases to 6X
• it increases to 9X

During its trip a car of mass 1500kg is traveling around a corner as shown in the picture. What actual force is equivalent to the centripetal force in this situation?

• Tension

• Friction

• Centripetal force

• gravity

Tags

NGSS.HS-PS2-1

Which statement is true about an object that is traveling in uniform circular motion?

• The speed of the object varies.
• The net force on the object is directed toward the center of the circular path.
• The direction of the object's velocity is constant.
• The net force on the object is directed away from the center of the circular path.

Is it possible for an object moving with a constant speed to accelerate? Explain.

• No, if the speed is constant then the acceleration is equal to zero.

• No, an object can accelerate only if there is a net force acting on it.

• Yes, although the speed is constant, the direction of the velocity can be changing.

• Yes, if an object is moving it can experience acceleration