Phys 71 review jan 31 2011 dlrc
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The document contains multiple physics problems related to kinematics, work, rotational motion, and moments of inertia. It asks about: - Which quantities will be the same for three balls released from the same height with different initial orientations. - The distance traveled, average angular velocity, and instantaneous angular acceleration of a fan rotating with an angular position of πt^2 rad/s^2. - The true statement about the angular velocity and linear velocity of two people on a rotating ride based on their position relative to the axis of rotation. - The moment of inertia of a solid sphere about an axis tangent to its surface given its moment of inertia about its center and other properties. - The direction
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- 1. SECOND EXAM
- 23. 26. Three balls having the same masses m are released simultaneously from the same elevation with speeds v but with different orientations: θ =90° , θ=45°, θ=30°. Neglecting air resistance, which of the following quantities will be the same for the three balls at the highest point of their motion? a. Total Mechanical energy b. Potential energy c. Kinetic energy d. momentum e. speed
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