speeu 19,94 V rm 5 mass kg Need Help? 2. [OH Points] PREVIOUS ANSWERS SERPSE1D 9.1 .P.003. ASK YOUR TEACHER PRACTICE ANOTHER A basebal approaches home plate at a speed of 47.0 mfs, moving horizontallvjust before being hit by a bat. The batter hits a pop-up such that after hitting the bat, the baseball is moving at 59.0 mfs straight up. The hall has a mass of 145 g and is in contact with the bat for 1.70 ms What is the average vector force the ball exerts an the bat during their interaction? (Let the +X'dIrECtIUn be in the initial direction of motion, and the +ydirectiun be up) _, F N on bat : 3: Need Help? _ T' Submit Answer 3. [111 Points] PREVIOUS ANSWERS SERPSE1O 9.2.0P.003.MI. ASK YOUR TEACHER PRACTICE ANOTHER A 46.07kg girl is standing on a 155*kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, at surface. The girl begins to walk along the plank at a constant velocity of 1.4Bi mfs relative to the plank. (a) What is the velocity of the plank relative to the ice surface? 41339 g i m/s (b) What is the girl's velocityr relative to the ice surface? imrs Need Help? 7. [0/1 Points] DETAILS PREVIOUS ANSWERS SERPSE10 9.3.P.011. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Water falls without splashing at a rate of 0.300 L/s from a height of 2.00 m into a 0.770-kg bucket on a scale. If the bucket is originally empty, what does the scale read 3.50 s after water starts to accumulate in it? (Note that you can ignore the initial impulse at t = 0.) 22.46 X Your response differs from the correct answer by more than 10%. Double check your calculations. N Need Help? Read It 8. [0.33/1 Points] DETAILS PREVIOUS ANSWERS SERPSE10 9.4.P.012. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 1 185.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 9 900.0 kg truck moving in the same direction at 20.000 m/s. The velocity of the car right after the collision is 18.000 m/s to the east. Vci VTi VCf If Before After (a) What is the velocity of the truck right after the collision? (Give your answer to five significant figures.) 4.9 20.837 m/s east (b) What is the change in mechanical energy of the car-truck system in the collision? (c) Account for this change in mechanical energy.Need Help? Read It 9. [0.5/1 Points] DETAILS PREVIOUS ANSWERS SERPSE10 9.6.OP.024. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The mass of Uranus is 8.68 x 1025 kg, and the mass of Neptune is 1.02 x 102 kg. The average distance of separation, measured between their centers, is 1.63 x 10 km. (a) Locate the center of mass (in m) of the Uranus-Neptune system as measured from the center of Uranus. 1.02e26 X Use the definition of center of mass, with the origin at Uranus's center and the x-axis passing through Neptune's center. In this case, mix, = 0. m from Uranus's center (b) Is the center of mass of the system located within Uranus? (Assume Uranus has a radius of 2.54 x 10' m.) O Yes O No Need Help? Read It 10. [1/1 Points] DETAILS PREVIOUS ANSWERS SERPSE10 9.6.P.024. MY NOTES ASK YOUR TEACHER A uniform piece of sheet metal is shaped as shown in the figure below. Compute the x and y coordinates of the center of mass of the piece. x = 11.7 cm y = 13.3 cm y (cm)