Atruck pulls a trailer from a standstill with a constant force. after 2 minutes, the truck is moving at 48 km/hr. if the same truck applies the same constant force to pull a second trailer which is 3 times the mass of the first trailer, how fast will the truck be moving after 2 minutes? a. 24 km/hr b. 16 km/hr c. 8 km/hr d. 64 km/hr

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.