Arocket has landed on planet x, which has half the radius of earth. an astronaut onboard the rocket weighs twice as much on planet x as on earth. if the escape velocity for the rocket taking off from earth is vo, then its escape velocity on planet x is (a) 210 (b) v2v0 c) vo (d) vo/2 (e) vo/4

In one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.

Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.

Suppose that two objects attract each other with a gravitational force of 16 units. if the distance between the two objects is double, what is the new force of attraction between the two objects?