Spaceship 1 and spaceship 2 have equal masses of 200 kg. they collide.
spaceship 1's final speed is 2 m/s, and spaceship 2's final speed is 1 m/s in
the same direction. what is their combined momentum?
o
a. 200 kg-m/s
o
o
o
b. 400 kg-m/s
c. 800 kg-m/s
d. 600 kg-m/s

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels. the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause, directly and indirectly, for such a rise in sea level is