Evening all. My teacher has given us the mass, distance, and gravitational force of every planet in the solar system. we have to work out every planets acceleration, speed, and orbital period. I'm having some trouble with the acceleration. This sshould be a very small number right? I'm using the equation f=ma. (This is for Venus) f=ma a=f/m f=1.12*10^34 m=4.89*10^24 now when i do f/m i get 2,290,388,548. Thats a huge number and I'm sure that Venus cant be accelerating that much. My answer for Mercury was 0.0246 m/s. Please help!!!