Arock is dropped and falls freely at 100 meters to earth. what is the speed of the object after 4 seconds?

Gravity adds 9.8 m/s to the speed of the falling rock every second. If there's enough height for it to keep dropping for 4 seconds, then gravity does that 4 times, and its speed grows to 4 times (9.8 m/s) which is . . .

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.

unlike poles attract