The tallest volcano in the solar system is the 23 km tall martian volcano, olympus mons. an astronaut drops a ball off the rim of the crater and that the free fall acceleration of the ball remains constant throughout the ball's 23 km fall at a value of 3.5 m/s^2. (we assume that the crater is as deep as the volcano is tall, which is not usually the case in nature.) find the time for the ball to reach the crater floor. answer in units of s. find the magnitude of the velocity with which the ball hits the crater floor. answer in units of m/s.

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative