I. Constant 12 Incrosing C. Decrosing D, 2 cro as frewiom cicular motion, the dinction of velocity changes because of. 1. Paturintial atocleration 12, Centrijetal force 37. 1A ancleration in uniferm circular motion is directed: A. Tappontial to the cincle is. Ine enverone acting on an object in uniform cincular motion is called: A. Centrifual force B. Cifanifational forme C. Incria D. Gravity 1. Contringsal force 50. The prive of an ofject in uniform circular motion is: B. Giran in tuniform circu plete one revolution A. The time to complete one 40. Inioh of the followine quantiti D. The force acting on the object B. The distance covered in one second ies remains constant in uniform circular motion? S. Volrcie 11. In uniform cir B, simus C. Aevelcration D. Centripetal foriso A. Nanlits of the circle 2. The dircution of centrintal acceleration is: D. Frictional ,he the ecneripetal fonce is proportional to: 1. Towients the enepter of the circle C. Nong the tangent to the circle E. If the radius of a circular puth is hahiod Parallel to the velocity B. Aluay from the center of the ciryle Parallel to the velocity A. llahes 13. Doubles C. Quadruples C. Inverse of the velocity 1). What provides the centrinctal forme for a D. Remains the same moving around a curve? d. Gravio B. Prietion between the tires and the road C. The engine force D. Air resistance A sarellite in circular orbit is hept in motion by: A. Gravizational force B. Magnctic force C. Frictional force D. Centrifugal

It appears you've provided a series of fragmented multiple-choice questions related to uniform circular motion. I'll do my best to reconstruct these questions and provide the correct answers based on the information available. --- ### 1. In uniform circular motion, the direction of velocity changes because of: **Options:** 1. Potential acceleration 2. Centripetal force **Answer:** The change in velocity direction is due to the **centripetal force** acting towards the center of the circular path. --- ### 2. Acceleration in uniform circular motion is directed: **Options:** A. Tangential to the circle B. Away from the center C. Towards the center (Centripetal) D. Parallel to the velocity **Answer:** **C. Towards the center (Centripetal)** *Centripetal acceleration* is always directed towards the center of the circle. --- ### 3. The force acting on an object in uniform circular motion is called: **Options:** A. Centrifugal force B. Centrifugal force C. Inertia D. Gravity E. Centripetal force **Answer:** **E. Centripetal force** *Note:* Centrifugal force is considered a "fictitious" force in a rotating frame of reference, whereas centripetal force is the real force that keeps an object moving in a circular path. --- ### 4. What provides the centripetal force for a car moving around a curve? **Options:** A. Gravitational force B. Friction between the tires and the road C. The engine force D. Air resistance **Answer:** **B. Friction between the tires and the road** Frictional force between the car's tires and the road provides the necessary centripetal force to keep the car moving in a circular path. --- ### 5. A satellite in circular orbit is kept in motion by: **Options:** A. Gravitational force B. Magnetic force C. Frictional force D. Centrifugal force **Answer:** **A. Gravitational force** Gravity acts as the centripetal force that keeps the satellite in orbit around a celestial body. --- ### 6. If the radius of a circular path is halved, the centripetal force required: **Options:** A. Remains the same B. Doubles C. Quadruples D. Inversely related to velocity **Answer:** **B. Doubles** The formula for centripetal force is \( F = \frac{mv^2}{r} \). If the radius \( r \) is halved, the required centripetal force \( F \) doubles, assuming mass \( m \) and velocity \( v \) remain constant. --- ### 7. In uniform circular motion, which quantity remains constant? **Options:** A. Velocity B. Acceleration C. Speed D. Centripetal force **Answer:** **C. Speed** In uniform circular motion, the **speed** (magnitude of velocity) remains constant, while the **velocity** (which includes direction) changes due to centripetal acceleration. --- ### 8. The direction of centripetal acceleration is: **Options:** A. Tangent to the circle B. Away from the center C. Towards the center D. Parallel to the velocity **Answer:** **C. Towards the center** Centripetal acceleration always points towards the center of the circular path. --- ### Summary of Key Concepts - **Centripetal Force:** The real force that keeps an object moving in a circular path, directed towards the center. - **Centripetal Acceleration:** Acceleration that occurs in circular motion, directed towards the center, calculated as \( a_c = \frac{v^2}{r} \). - **Uniform Circular Motion:** Motion with constant speed along a circular path, where only the direction of velocity changes. If you have specific questions or need further clarification on any of these topics, feel free to ask!