Aball is thrown straight up from the ground with speed v0. at the same instant, a second ball is dropped from rest from a height h, directly above the point where the first ball was thrown upward. there is no air resistance. a) find the time at which the two balls collide. express your answer in terms of the variables h, v0, and appropriate constants. b) find the value of h in terms of v0 and g so that at the instant when the balls collide, the first ball is at the highest point of its motion. express your answer in terms of the variables v0 and g.

a)

b)

Explanation:

Let the first ball throw be the point of reference, we can have following the equation of motion:

1st ball:

2nd ball:

a)When the 2 balls collide they are at the same spot at the same time:

b) The first ball is at its highest point when v = 0. That is

After this time, the 2 balls would have traveled through a distance of

Since we can solve for H

a) cold, dry

explanation:

continental polar masses are cold and dry air masses because the cold air cannot hold much moisture. as they move into warmer air, they can trigger precipitation.

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.