physics
posted by Ashley on .
U(J)
6 

4 
\ 
2 \ ______/
\ /
\_____/
0 1 3 5 7 8 x(cm)
Best I could do in drawing a graph!!
A 10 g particle has the potential energy shown in the figure above.
Part A: How much work does the force do as the particle moves from 2 cm to 6 cm?
W = ? J
Part B: What speed does the particle need at x = 2cm to arrive at x = 6m with a speed of 10 m/s ?
v = ? m/s
Can anyone help with the formulas?

Sorry about the graph. Since the graph did not post properly, here is explanation of the graph. I really need help!!
The y axis is for U(J) and the x axis is in cm. There is a diagonal line from 4 J down to 1 cm and levels out on the x axis to 3 cm and rises again to height of 2 J at 5cm and levels out to 7 cm and rises to 6 J at 8cm.