Two identical particles, each with a mass of 2.0 g and a charge ...

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Two identical particles, each with a mass of 2.0 g and a charge of 25 nC, are released simultaneously from rest when the two are 4.0 cm apart. What is the speed of either particle at the instant when the two are separated by 10 cm?
 a. 7.3 m/s
  b. 9.8 m/s
  c. 9.2 m/s
  d. 6.5 m/s
  e. 4.6 m/s

Question 2

A 60-C charge is held fixed at the origin and a 20-C charge is held fixed on the x axis at a point x = 1.0 m. If a 10-C charge is released from rest at a point x = 40 cm, what is its kinetic energy the instant it passes the point x = 70 cm?
 a. 9.8 J
  b. 7.8 J
  c. 8.8 J
  d. 6.9 J
  e. 2.8 J

[kbennett34]

Answer to Question 1

d

Answer to Question 2

c

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Thanks for the timely response, appreciate it

[ktidd]

Gracias!