Neglecting air resistance, which of the following statements is true regarding an object in freefall? a. An object’s velocity changes at a constant rate, and its acceleration remains constant.
b. An object falls an equal distance in between each second.
c. An object maintains a constant velocity.
d. An object’s acceleration increases at a constant rate.

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

When an object is heated it contracts. a. true b. false

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.