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?

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?

The average atmospheric pressure on earth is approximated as a function of altitude by the relation patm = 101.325 (1 − 0.02256z)5.256, where patm is the atmospheric pressure in kpa, and z is the altitude in km with z = 0 at sea level. determine the approximate atmospheric pressures at atlanta (z = 306 m), denver (z = 1610 m), mexico city (z = 2309 m), and the top of mount everest (z = 8848 m).