What is 10^2 in scientific notation?

Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.

Idon’t quite understand this problem

What is a carrier wave and how does it affect what you hear on the radio