Someone help me please! will give brainliest The force of gravity on a person on earth is greater than the force of gravity on a person on the moon. Therefore, an astronaut on the moon will...

Select one:
a. have more mass.
b. have less mass.
c. have the same mass.
d. have no mass.

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.