Somebody please A girl drops a penny off a bridge. The penny lands in the water after 1.2 s. What is the speed of the penny just before it hits the water? Please write out the steps cause I have no idea how to do this!!
*if you post links i will report u so don't*

Study the following reaction carefully. what classification should this reaction have? 4al + 3o2 2al2o3synthesisdecompositionsingle replacementdouble displacement

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.

Which of the following are appropriate acceleration units?