2. bianca stands on top of a tall building. she drops a 3 kg rock from rest. ignoring air resistance, what will be the
velocity of the rock after 3 s?
a. -10 m/s
b. -30 m/s
-0.33 m/s
+10m/s

If the force on an object is in the negative direction, the work it does on the object must be [2 points a) negative. b) positive c) the work could be either positive or negative, depending on the direction the object moves

Which statement correctly describes the relationship between frequency and wavelength?

Acompound machine is also called a machine. a. force b. simple c. complex d. directional