An alpha particle (charge +2e and mass 4m_p) is on a collision course with a proton (charge +e and mass m_p). Assume that no forces act other than the electrical repulsion. Which one of these statements about the accelerations of the two particles is true?

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(a) a = ap = ap %3D (b) a = 2ap (c) a = 4a, (d) 2ã, = a, (e) 4a = a, (f) a = -ā, (g) a = -2ã, (h) a = -4ã, (i) -2a, = a, 1) -4ā, = ā,