Two spheres are dropped from a balcony. Sphere A is twice as heavy as sphere B. When they are dropped simultaneously, they reach the ground at the same time but Sphere "A" will have a greater... acceleration of gravity II \\___t .'r-'H I. ll \\___2 centripetal force 0 change in direction momentum \\___/ .;"":;. velocity \\___ Question 2 (1 point} Saved an I will often stand on my teacher desk to get students attention during lecture. When I jump off, | bend my knees as I reach the ground. By doing this, the time of impact is 10 times greater than it would be if I kept my legs stiff. As a result, the ayerage force my body experiences is... .-;. more than 1f10th as great ,; __0 times as great \\___/ fj'lOth as great "\\___/' less than 1f10th as great '\\___.I .;'.-. the same force 41) Listen b You and a roommate are pushing similar boxes across the floor. Both of you push your box with the same amount of force, but you push the box twice as far. Which statement is true? \\ .- You did twice as much work You did 1X4 as much work '\\ '\\ You did half as much work K. You did 4 times as much work \\___/ Question 7 (1 point) 41) Listen h Two rollercoasters were just built at Six Flags Physics Phunland. The first coaster (Newton's Revenge) has a main drop that is twice as tall as the drop on a second coaster (The Momentum Mover). Which of the following statements is true? "'\\ At the bottom of the first drop. Newton's Revenge will have twice the kinetic \\___/ energy of the Momentum Mover "\\ At the bottom of the first drop. Newton's Revenge will have 1/2 the kinetic E energy of the Momentum Mover. _'\\. Both coasters will have the same potential energy at the top of their first drop. _'\\. Both coasters will have the same kinetic energy at the bottom of the first drop. "'\\ At the top of the first drop. the Momentum Mover has twice as much potential \\___/ energy as Newton's Revenge. Question 8 (1 point) an Two hikers venture to Rocky Mountain National Park to climb Long's Peak. The first hiker, John Vonclimber decides to take the steep. short hike to the top. The other hiker, Lisa Roper. takes the longer. less steep hike to the top. Which statement best describes the work done by the hikers? John Vonclimber and Lisa Roper do the same amount of work. I, - II John Vonclimber does more work due to the steeper ascent (more force} \\-_ l John Vonclimber does less work due to the decreased distance. Lisa Roper does more work due to the increased distance. \\-_ Lisa Roper does less work due to the less steep slope {less force) Question 9 (1 point) an The motor of an amusement ride applies a force of 15.000 Newtons lifting a cart a distance of 10 meters. If the electrical motor does this in 20 seconds, how much power is used? 7,500 Watts 750 Watts .; 3,000,000 Watts 150,000 Watts 150 Watts / x