posted by Justin .
A 1300-kg car rolling on a horizontal surface has speed v = 65 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.3 m.
What is the spring stiffness constant of the spring?
1/2 mv^2=1/2 k x^2
change v to m/s then solve for k
i put 1023.04 as the answer and it said it was wrong
try using the correct sigfigs?
and ur answer is wrong neway