Period 3: Gravity And Circular Motion Challenge 1

5 Questions | Attempts: 130

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• 1.
Which direction does the centripetal force always act?
• A.

In the direction the object is moving

• B.

Toward the center

• C.

Along the line of inertia

• D.

It depends on the type of force

• 2.
You are whirling a rock on the end of a string over your head. The string suddenly snaps. Which direction would the rock go?
• A.

In the direction of the blue arrow

• B.

In the direction of the green arrow

• C.

In the direction of the black arrow

• D.

Straight to the floor

• 3.
What keeps the earth moving on its curved path around the sun?
• A.

The force of gravity causes a centripetal acceleration

• B.

Inertia

• C.

The centripetal force causes gravity

• D.

A force of tension

• 4.
As laundry goes around in the laundry machine, which direction is it being accelerated?
• A.

Toward the center

• B.

Toward the outside of the drum

• C.

It depends on whether inertia applies in this situation

• 5.
A toy car with a mass of 2 kg races around a track that has a radius of 0.5. Its speed is 3.6 m/s. What is the centripetal force of the car?
• A.

52 N

• B.

14 N

• C.

13 N

• D.

26 N