Ahmed saw all of these things as he walked to school this morning. Which one is an example of a force pushing downward toward the ground?

A. A bird sat on a telephone wire.

B. A woman moved her child from one place to another in a wagon.

C. A man pulled weeds in his garden

D. A dog tugged on a rope a child held

The path of a satellite orbiting the earth causes it to pass directly over two tracking stations a and b, which are 51 miles apart. when the satellite is on one side of the two stations, the angles of elevation at a and b are measured to be 87 degrees and 84 degrees, respectively. (a) how far is the satellite from station a? (b) how high is the satellite above the ground?