An astronaut jumps with a particular initial velocity on Earth and measures a maximum height of 0.936 m and a range of 1.72 m. Later, he jumps on a new planet where the acceleration due to gravity is one third of its value on Earth. (a) If he jumps with the same initial velocity (speed and angle) what will his new maximum height b

An electron and a proton are held on an x axis, with the electron at x = + 1.000 m and the proton at x = - 1.000 m. part a how much work is required to bring an additional electron from infinity to the origin? express your answer with the appropriate units. part b if, instead of the second electron coming in from infinity, it is initially at x = + 20.00 m on the axis and is given an initial velocity of 100.0 m/s toward the origin, does it reach the origin? part c how close to the origin does it come?