While standing at the edge of the roof of a building, a man throws a stone upward with an initial speed of 6.45 m/s. The stonesubsequently falls to the ground, which is 20.1 m below the point where the stone leaves his hand.At what speed does the stone impact the ground? Ignore air resistance and use g = 9.81 m/s² for the acceleration due to gravity.impact speed:m/sHow much time is the stone in the air?elapsed time:

Answered: Image /qna-images/answer/2fbd4938-2b71-44cb-9ed9-b35ad016079d.jpg

Answered: While standing at the edge of the roof…

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter5: Energy

Section: Chapter Questions

Problem 79AP: A ski jumper starts from rest 50.0 m above the ground on a frictionless track and flies off the...

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A ski jumper starts from rest 50.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0 above the horizontal and at a height of 10.0 m above the level ground. Neglect air resistance, (a) What is her speed when she leaves the track? (b) What is the maximum altitude she attains after leaving the track? (c) Where does she land relative to the end of the track?
An athlete jumping vertically on a trampoline leaves the surface with a velocity of 8.5 m/s upward. What maximum height does she reach? (a) 13 m (b) 2.3 m (c) 3.7 m (d) 0.27 m (e) The answer cant be determined because the mass of the athlete isnt given.
A rescue diver of mass 84 kg jumps from a hovering helicopter into the ocean 34 meters below. What is the diver's speed (in m/s) when he hits the water?
The skateboarder starts down the left side of the ramp with an initial speed of 6.3 ft/s. If nonconservative forces, such as kinetic friction and air resistance, are negligible, what would be the height "h" of the highest point (in meters) reached by the skateboarder on the right side of the ramp?
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