1.) A pencil is dropped from the top of a very tall bridge and hits the ground 3.2 s later.
A.) With what velocity did the pencil hit the river below?
B.) How far did the pencil fall?
2.)
The same pencil is dropped and falls 30 m.
A.) How long did it take the pencil to hit the ground?
B) With what velocity did the pencil hit the ground?

Air flows upward in the wick of a lantern because of the liquid property called

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?