Hannah decides to join a rodeo tour. In the first event, she is riding a bucking bronco when she is thrown off. At the instant she leaves the horse she is located 1.6m above the ground and is moving straight up at 4.0m/s. a) What maximum height above the ground does Hannah reach? b) What speed will she hit the ground? c) At what initial speed would a heavier cowgirl have to be traveling to reach the same height as Hannah in (a)? Explain

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.