A proton's speed as it passes point A is 5.00�104m/s . It follows the trajectory shown in the figure.
(Figure 1)
Part A
What is the proton's speed at point B?
Express your answer with the appropriate units.
conservation of energy
q V + 1/2 mv^2 = q V + 1/2 mv^2
1.6E-19*30 + 0.5*1.67E-27*5.0E4^2=1.6E-19*-10 + 0.5*1.67E-27*v^2
v=100820 m/s
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