Match the process with the fundamental interaction responsible for this process. - Protons in a nucleus repel each other. -The Earth pulls on the Moon. -Protons and neutrons attract each other in a nucleus. -A neutron outside a nucleus decays into a proton, electron, and antineutrino. with these : 1- The electromagnetic interaction 2- the gravitational interaction 3- The weak interaction 4- The strong interaction

1- The electromagnetic interaction - A neutron outside a nucleus decays into a proton, electron, and antineutrino

2- the gravitational interaction - The Earth pulls on the Moon

3- The weak interaction - Protons and neutrons attract each other in a nucleus

4- The strong interaction - Protons in a nucleus repel each other.

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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