Which of the following is true regarding momentum? The velocity of an object has no effect on its momentum. Increasing the mass of an object increases its momentum. The mass of an object has no effect on its momentum.

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 .

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?

Which of the following best describes the shape of earth's orbit? a.ellipticalb.circularc.spirald.figure eight