"Conclude how Newton's first, second, and third laws apply to you eating your breakfast." ​

What produces a record of seismic waves? richter scale seismogram barometer seismograph

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?