Need a real Physics master

2. You are looking at a Ferris wheel (you see a circle) and observe that it is rotating clockwise. The 

direction of the rotational velocity of the Ferris wheel is? (hint use the right-hand rule) 

 a. directly toward you. 

 b. directly away from you. 

 c. down. 

 d. up 

____ 3. You are looking at a Ferris wheel (you see a circle) and observe that it is rotating clockwise with 

decreasing rotational speed. The direction of the rotational acceleration of the Ferris wheel is 

 a. directly toward you. 

 b. directly away from you. 

 c. down. 

 d. up 

____ 4. A clock (with hands) is flat on your desk. What direction is the rotational velocity? 

 a. up. 

 b. down. 

 c. Right. 

 d. Left 

 NAME:SECTION:DATE:

____ 5. Newton's first law for rotational motion states that an object will maintain its state of rotational 

motion unless acted on by an unbalanced (or net) 

 a. force. 

 b. velocity. 

 c. inertia. 

 d. torque. 

____ 6. An object's resistance to a change in its rotational velocity is called its 

 a. inertia. 

 b. mass. 

 c. torque. 

 d. Moment of Inertia or rotational inertia. 

____ 7. A solid disk and a thin hollow hoop have the same mass and radius. Which has the larger rotational 

inertia? 

 a. hoop 

 b. disk 

 c. they are the same. 

 d. depends on the material the item are made of 

____ 8. A fully-loaded trailer truck is less stable than a race car because the truck 

 a. is more massive. 

 b. has a higher center of mass. 

 c. has bigger wheels. 

 d. weighs more. 

____ 9. The rotational inertia of an object increases as the mass ____ and as the distance of the mass from the 

center of rotation ____. 

 a. increases ... increases 

 b. increases ... decreases 

 c. decreases ... increases 

 d. decreases ... decreases 

____ 10. Under what conditions is the total angular momentum of a system conserved? 

 a. It is always conserved. 

 b. When there is no net outside force. 

 c. When there is no net outside torque. 

 d. When the kinetic energy is also conserved. 

____ 11. A change in the rotational velocity of an object is produced by a net 

 a. force. 

 b. torque. 

 c. rotational inertia. 

 d. moment arm. NAME:SECTION:DATE:

____ 12. The rotational displacement of two complete turns is equal to

a. 4π rad

b. 720deg

c. 2rev

d. Alloftheabove