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:
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The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .