6:42 t B ezto.mheducation.com Chapter 7 Assig... 0 Saved ave & Exit Submit A 66.0-kg astronaut is in space, far from any objects that would exert a significant gravitational force on him. He would like 1'31 to move toward his spaceship, but hisjet poms pack is not functioning. He throws a 0.720-kg socket wrench with a velocity of 5.00 m/s in a direction away from the 98"\" ship. After 0.500 5, he throws a 0.800kg Him spanner in the same direction with a speed of 8.00 m/s. After another 9.90 5, PM he throws a mallet with a speed of 6.00 References m/s in the same direction. The mallet has a mass of1.20 kg. How fast is the astronaut moving after he throws the mallet?(assume all speeds are relative to the spaceship). l:Jm/S 6:42 t B ezto.mheducation.com Chapter 7 Assig... 0 Saved ave & Exit Submit 12 Women often experience back pain when they are pregnant. Suppose a woman's mass before pregnancy is 69.0 kg and 1'31 her center of mass when standing is poms located directly above the hips. By the thirty-fourth week of pregnancy, she has gained 8.00 kg (the combined mass of GBOOk the fetus, the placenta, and the amniotic Him fluid). The center of mass of this 8.00 kg is 18.0 cm in front of the hips. If she hasn't Prim changed her posture, how far in front of References the hips is her center of mass? (Women have three wedge-shaped lumbar vertebrae, whereas men have only two. This evolutionary adaptation permits a greater curvature ofthe lumbar spine to keep a pregnant woman's CM above the hips.) [jun 6:43 t B ezto.mheducation.com Chapter 7 Assig... 0 Saved ave & Exit Submit 14 Required information Pan10f2 In the railroad freight yard, an empty freight car of mass m rolls along a 131 straight level track at 1.00 points m/s and collides with an initially stationary, fully loaded boxcar of mass eBook 5.50m. The two cars couple together on Hint . . colhsmn. Print References What is the speed of the two cars after the collision? [:m/s CD Ill