Leah has a mass of 50kg and is using a 3.4m ladder. the acceleration is equal to 9.8 meters per second squared. what force, in newtons, does leah exert on the ladder when she is standing on it ?

"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.

when it gains or loses electrons