1. Is the tangential velocity of a uniform circular motion constant? Its magnitude is, but its direction is not. Both its magnitude and direction are constant. The velocity varies both in terms of magnitude and direction. Answer to this question cannot be determined based on the given information. 2. To what direction did you exert force to make the pail move in a uniform circular motion? Along the circumference of the circular path. Towards the direction of the tangential velocity. Towards the center of the circular path taken by the pail. On a direction opposite to that of the tangential velocity. 3. A ball that is kicked to roll on the t 1. main-1 oor stop rolling after sometime even though it did hit any other object. Is this a violation of the law of inertia? Yes, because the ball it should have continued rolling until something forces it to stop. Yes, because the ball stop rolling even though no outside force has been applied to it. No, because the non-contact force of gravity affected its motion and forces it to stop. No, because the contact force of friction acted on it and causes it to stop. 4. Is the cart on the grocery ramp affected by the noncontact force of gravity? Yes, since is kept from rolling out of its place due to friction. Yes, that is why it has weight. No, thus it is not in free fall. Nc, only fricticn acts on it. 5. What causes your recycled vehicle 7'\" i am in the third challenge to move? The action force applied to it by the air of the inating balloon. The reaction force of the air from the inating balloon. The action force of the person that pushed it. The reaction force ofthe surrounding air. 6. Why did the material on the topmost part in the second challenge fell towards the container instead of towards the direction of the applied force? It is because force is directly applied to it. It is because no friction force acts upon it. It is because of its tendency to stay in place. It is because it is the only material in the set up that is affected by gravity. 7. Is is true that to make the vehicle * 1 point in the third challenge move faster, it must be made to move on a rough surface? O Yes No O Maybe Cannot be determined