Aspacecraft left earth to collect soil samples from mars. which statement is true about the strength of earths gravity on the moving spacecraft? a.) it decreases b.) it increases c.) it remains the same d.) it doesn’t affect the spacecraft

Identify the type of synthetic material used in each object

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2. a. 9.5 m b. 11.9 m c. 15.2 m d. 23.8 m