Why did scientist interested in exploring mars?

a. possible discovery of a cure for disease.
b. possible existence of sulfur vents.
c. possible evidence of life.

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big

J. j. thomson’s experiment disproved the theory that an atom