Question

the braking distance (in feet) of a car going v mph is given by d=v^2/20+v find the speed for braking distance of 100ft. round to nearest mile per hour

Answer 1

You would start by plugging in the given "100 ft" in the equation.

100=v^2/20+v

you would then solve for "v" using arithmetic.

Answer 2

can you help me solve it i dont know how to start it

Answer 3

is it v^2/20 + v or v^2 / ( 20 + v)