A solid cylinder, a hoop, and a solid sphere are released at the top off an incl

Question

A solid cylinder, a hoop, and a solid sphere are released at the top off an inclined plane at the same time and roll without slipping. Which of the following represents the order (first to last) in which they reach the bottom of the incline? a) hoop[, solid cylinder, solid sphere b) solid cylinder, hoop, solid sphere c) solid sphere, hoop, solid cylinder d) solid cylinder, solid sphere, hoop e) solid sphere, solid cylinder, hoop Which of the following has a speed of approximately 343 m/s? a) A sound wave travelling through air at room temperature b) A world class sprinter at top speed c) A car travelling at normal highway speed d) A satellite in Low Earth Orbit (LEO) e) None of the Above Which of the following parameters is conserved in an elastic collision between two objects? a) Momentum b) Total Energy c) Kinetic Energy d) All of the above are conserved e) None of the above are conserved Which of the following quantities is not matched with its appropriate SI unit symbol? a) acceleration - m/s^2 b) angular velocity - rad/s c) work - J d) force - W e) All of the above are matched with their SI Units An automobile tire is inflated to a gauge pressure of 32.0 psi (2 20x10^5 Pa). Which of the following quantities would have the highest value? a) Absolute pressure of the air within the tire b) Gauge pressure of the air within the tire c) Standard atmospheric pressure d) All of the above have the same value e) There is not enough information provided to determine the highest value.

Explanation / Answer

According to the given problem,

6.) Larger the I[moment of interia] lower the velocity and reached last,

Ihoop>Isolid cylinder>Isolid sphere Ans : E

7.) Ans: A speed of sound through air at room temparature.

8.) Ans: D in a elastic collision all are conserved.

9.) Ans: D force unit is newton not watt.

Only 4 subparts per question.

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