You go skydiving in the upper atmosphere and you want to deploy your parachute when you reach the speed of sound, 343 m/s. How many seconds should you wait after
stepping out of the plane before deploying your chute? Ignore air friction.

An object is dropped from a tower, 400 ft above the ground. the object's height above ground t seconds after the fall is s(t)equals400 minus 16 t squared. determine the velocity and acceleration of the object the moment it reaches the ground. the velocity of the object the moment it reaches the ground is nothing ft/s.

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.