Question

ULLII 5 points. Select only one correct 1. A boy and a girl are riding a merry-go-round which is turning at a constant rate. The boy is near the outer edge, while the girl is closer to the center. Who has the greater tangential acceleration? (a) The girl (b) The boy (c) Both have zero tangential acceleration. (d) Both have the same non-zero tangential acceleration. 2. Consider two uniform solid spheres where both have the same diameter, but one has twice the mus of the other. The ratio of the larger moment of inertia to that of the smaller moment of Inertins (a) 10 (b) 6 (c) 4 (d) 2 (e) 8 3. A Ping-Pong ball moving east at a speed of 4.0 m/s, collides with a stationary bowling, ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the east. Which object experiences the greater magnitude impulse during the collision (a) Neither, both experienced the same magnitude impulse. (b) The Ping-Pong ball (c) The bowling ball (d) It is impossible to tell since the velocities after the collision are unknown.

Answer 1

Mool we know for both the angular acceleration is game but tangential acceleration is Ba, where R is separcation from centice. The boy has more separce tion that girch so The boy has greater tangential acceleration (6) Radius = R csame for both) If smaller one has mass m, then larger one has am. So their ration Mo:2 I = 3x2mxR? Il XRXR2 Mo-3 (a) Meith, both expicercienes the same magnitude of impulse. because we know from conservation of momentum, a minat mura mini mara - - (min-mula mare - ma uz - - 31 32 15:12 1331