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A positron and an electron are placed in free space 1 meter away from each other....

A positron and an electron are placed in free space 1 meter away from each other. The positron has the same mass as the electron, which is 9.11 × 10−31kg, and has the same magnitude of charge as that of the electron, which is 1.6 × 10−19 C. The electron has negative charge and the positron has positive charge. The electron and the positron are released from rest and begin to move towards each other. They will both have the same speed when they collide. (a) Find that speed in m/s using the force - Newton’s Second Law. (b) Find the speed using conservation of energy.
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