The restoring force on an object is proportional to which of the following?

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.