Circles

The magnitude of the centripetal force acting on an object traveling in a horizontal, circular path will increase if the

• radius of the path is increased

• mass of the object decreased

• direction of motion of the object is reversed

• speed of the object is increased

Which vector arrow represents the acceleration of the ball?

• A

• B

• C

• D

Which vector arrow represents the speed of the ball?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

What's the centripetal force of a .2 kg yoyo spun in a circle with a radius of .7 meters at a velocity of 3 m/s?

• 2.05 N

• 2.57 N

• 2.90 N

• 3.13 N

Which description best describes the velocity of an object in uniform circular motion?

• It changes magnitude and is tangent to the circle.

• It constantly changes magnitude and direction.

• It changes direction and is tangent to the circle.

• It changes magnitude and is towards the center of the circle.

Which of the following best describes CENTRIFUGAL force?

• It acts towards the center of the circle.

• It acts away from the center of the circle.

• It does not exist.

What is the centripetal acceleration of the ball?

Tags

NGSS.HS-PS2-1

There are two Polar Circles near the Poles. They are...

• Arctic Circle and Antarctic Circle

• Arctic and Southern Circles

• Circle of Cancer and Capricorn

• Northern Circle and Antarctic Circle

root: Cycle

• to move in a straight line

• prevent

• to move in a circle

• run

What is the formula for the circumference of a circle?