I'm stuck with this. The force from your car's motor is 6,000 N. The mass of the car is 900 kg. What will be you final speed after driving a distance of 25 m a. if you start from rest b. if you have an initial speed of 20 m/s. I can get W=fd but I cant get how to find the speed (velocity) W=fd W=6000*25 = 150,000J KE=1/2mv^2 I am at a loss where to pick up speed. I can get accleration by doing A=F/m A=6.67m/s/s But accleration isnt the same as speed. I know there must be a way of working back from the info I have but I really just cant see it. I'd really appreciate some help.