A plane is flyinn 120m above the ground at an angle of 30 to the horizontal, when the pilot released two fuel tanks to decrease the plane's load. how long did the tanks fall an with what speed did it hit the ground if the plane's speed was 84m/s

Why do astronauts in the space shuttle weigh less?

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?