Which of the following are true statements? (again, assuming a small-enough ?t)

Question

Which of the following are true statements? (again, assuming a small-enough ?t) ?P/?t = F || + F perpendicular The rate of change of momentum of a system is proportional to the net external force on the system. F=ma P= Fnet?t Pf = Pi + Fnet?t For every gravitational and electrostatic force that one object exerts on another, there is an equal and opposite reaction force from the second object on the first. pf, x = pi, x + Fnet, x?t pf, z = pi, z + Fnet, z?t The momentum of a system is conserved. For every action there is an equal and opposite reaction. rf = ri + Vavg?t pf, y = pi, y + Fnet, y?t dP/dt = Fnet

Explanation / Answer

For every gravitational and electrostatic force that one object exerts on another, there is an equal and opposite reaction force from the second object on the first. pf, x = pi, x + Fnet

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