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?

7 answers

1/2 mv^2=1/2 k x^2

change v to m/s then solve for k

1023.04 N/M

i put 1023.04 as the answer and it said it was wrong

try using the correct sigfigs?

and ur answer is wrong neway

m=1300
v~18
x=2.3

now solve

79622?

1.8*10^4