The information we have about the channel on Mars has mostly come from satellite images and scientific models. However, rovers and landers developed by NASA have made it possible to collect information directly from the surface of Mars. Think about the channel on Mars. What information would you want to collect from the surface of Mars to help you determine whether the channel was formed by flowing lava or flowing water?

d) physical means can be used to separate the components of air.

a sonic boom is a loud boom that breaks the sound barrier

explanation:

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft