The Skydeck at Willis Tower is 1353 ft (412 meters) above the ground. a. Calculate how long it will take a marble to land if it's dropped from the Skydeck.
b. How fast will the marble be moving just before it lands?

Write a question about how changing temperature affects the gas inside the sports ball

Describe the path of the electric current through a circuit?

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.