Space explorers discover an 8.7×1017 kg asteroid that happens to have a positive charge of 4400 c. they would like to place their 3.3×105 kg spaceship in orbit around the asteroid. interestingly, the solar wind has given their spaceship a charge of −1.2 c. what speed must their spaceship have to achieve a 7500-km-diameter circular orbit?

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

Bernie drove home from a vacation in 1.5 hours. he traveled a total distance of 60 miles. what was his average speed in miles per hour? a. 60 mph b. 90 mph c. 40 mph d. 55mph

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f