A11 g toy car moving to the right at 25 cm/s has a head-on nearly elastic collision with a 23 g toy car moving in the opposite direction at 31 cm/s. after colliding, the 11 g car moves with a velocity of 51 cm/s to the left. find the speed of the second car after the collision. answer in units of cm/s.

Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?

Which radioisotope is used in dating geological formations?

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.