Circular Motion

Which represents the acceleration of the ball?

• A
• B
• C
• D

Which of the following depict the speed of the blowing ball?

• A
• B
• C
• D

Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s².

• 2.4 m/s
• 3.6 m/s
• 3.9 m/s
• 4.2 m/s

Calculate the mass of an object if it took 20 N to rotate it in a circle with a radius of 2 meters with a velocity of 4 m/s

• 4.1 kg
• 3.6 kg
• 2.5 kg
• 1.8 kg

Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.

• 10 N
• 20 N
• 30 N
• 40  N

You are moving a ball in a circle using 72 N of centripetal force. What would the force be if you doubled the radius of the circle.

• 18 N

• 36 N

• 72 N

• 144 N

Centripetal force is an acceleration of an object moving in circular path whose direction is _________________________of the circular path and whose magnitude is equal to the square of the speed divided by the radius.

• towards the tangent

• towards the centre

• towards the minimum point

• towards the maximum point

Where is the net force when the rollercoaster is at the top of the loop?

• Towards the sky

• Towards the Right

• Towards the left

• Towards the center of the circle

In uniform circular motion, the magnitude of the _______________________of an object is constant but the __________ is continually changing.

• speed, acceleration

• speed, direction

• acceleration, speed

• acceleration, velocity

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.