The terminai velocity of a person Falling in air depends upon the weight and the area of the person facing the fluid. Find the terminal veiocity (in meters per second and kiiometers per hour) of a 76.0 kg skydiver failing in a pike (headfirst) position with a surface area of 0.150 ml. (Assume that the density of air is 1_21 kgjirh3 and the drag coefficient of a sic/diver in a pike position is 0.7. For ea(h answer, enter a number.) =.tenmimai..uelocit\\ in m/s L Entera number. = - . v-u ityin km/h :x mm Semietrailer trucks have an odometer on one hub of a trailer wheel. The hub is weighted so that it does not rotate, but it contains gears to count the number of wheel revolutionsiit then caicuiates the distance traveied. If the wheei has a 11.2 m diameter and goes through 240,000 rotations, how many Kilometers shouid the odometer read? (Enter a number.) :x m Helicopter blades withstand tremendous stresses. In addition to supporting the weight of a helicopter, they are spun at rapid rates and experience large centripetal accelerations, especially at the hp. (For each answer, enter a number] (a) Calculate the magnitude (in m/SZ) of the centripetal acceleration at the tip of a 3.90 m long helicopter blade that rotates at 250 rev/min. :lmlsl (b) Compare the linear speed of the tip with the speed of sound (taken to be 340 rn/s). Vim/"sound : l:l (b) (C) A 19.0 kg child is riding a piayground merryigorround that is rotating at 35.0 rev/min. What (entripetal fame (in N) must she exert to stay on if she is 2.50 rn from its center? (Enter a number.) :IN What centripetal force (in N) does she need to stay on an amusement park rnerryrgcrround that rotates at 3.00 rev/min if she is 6.00 rn from its center? (Enter a number.) :IN Compare each force with her weight. (For each answer, enter a number.) (force from (a))/(weight) : E (force from (bD/(weight) E