If gravity were somehow eliminated:

a. Earth would spiral outward away from the Sun.
b. Move in a straight line out into space.
c. Spiral inward toward the Sun.
d. Move in a straight line toward the Sun.

b. Move in a straight line out into space.

Gravity is the force that makes objects with mass attract each other. The sun being more massive causes the Earth to orbit around it, if gravity disappeared, our planet would be launched into space in a straight line in the direction in which it was moving at that time.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

the total distance traveled by the car is

30km + 49km = 79 km .