a robe exert a force on a 20kg crate. the crate starts from rest and accelerates upward at 5m/s^2 near the surface of the earth. how much work was done by the force in raising the crate 4.0m above the floor?

Answer 1

What is your school SUBJECT?
What is a robe?
What have you done to try to solve this problem?

Answer 2

just don't know how to start

Answer 3

and it is a rope not robe

Answer 4

force = mass * acceleration
work = force * distance

what are you missing?