What happens to momentum when two objects collide

The extremely high temperatures needed to trigger nuclear fusion are proposed to be generated by laser irradiating a spherical pellet of deuterium and tritium fuel of diameter 1.8 mm. (a) determine the maximum fuel temperature that can be achieved by irradiating the pellet with 200 lasers, each producing a power of 550 w. the pellet has an absorptivity 0.3 and emissivity 0.8.

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot