/sci/ - Science & Math

I'm starting to think there might be some kind of typo in b.

At x = 5cm:
Potential Energy = 2J (shown explicitly on the graph)
Kinetic Energy = .12J (1/2m*v^2 -> 1/2(.015)(4)^2 =.12)
Total Energy is 2.12J

At x = 0cm:
PE = 4J (shown explicitly on the graph)
KE is not known
Total Energy is already at 4J, which is greater than the total energy of the system at x=5cm.

How am I supposed to find the velocity at x=0 when its PE alone is already exceeding the total energy in the system? The velocity / KE of the particle at x=5 would need to have been significantly greater in order for me to find this.
I have to increase the PE at x=5 by 2J in order to have it match x=0, but I've only got .12J of KE.