The cork in Question 1 travels I foot in moving from its lowest position to its highest position. What is the average velocity of the cork during this motion?

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

Hydrogen and helium are both members of?

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.