The force of gravity on an object on the surface of mars is less than the force of gravity on an identical object on the surface of earth. which of the following explains why this is true?

a. mars has more volume than earth.
b. earth has more volume than mars.
c. mars has less mass than earth.
d. earth has less mass than mars.

An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?

Natural forces that can alter ecosystems include seasons and climate changes. t or f

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)