A person pushes a 16-kg with constant speed with a force of 80N directed along the handle. Calculate the force the person must exert on the lawn mower to accelerate it from rest to 1.5 m/s in 2.5 seconds (assuming the same retarding force). k well so far i got the acceleration, which is 0.6m/s/s. I also got FN which is FN= F(y)+mg, but i dont know if thats important. My retarding force is 56.6N does that mean my F(push)= Fretarding?