7. Two skateboarders collide in a collision while traveling in the same direction. Skateboarder 1 has a mass of 70-kg and skate boarder 2 has a mass of 55-kg. What is the
speed of skateboarder 2 after the collision?
BEFORE
V=6m V2=5 m
AFTER
Vis 4m
V = ?
Å
Oh my !?
M = 70 kg
M2= 55 kg
20
Variables:
Show Work

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.