HELP PLEASE! A 11 kg object sits on a surface with friction. A 40 N force pulls up and to the
right at 30. Find the acceleration if it moves and the additional force if it doesn't move.
move.

Explain how the energy of rubber ball is tranforned as it roll down a ramp. give evidence that the energy of the og the ball remains the same at all points on the ramp

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)

Should we celebrate the voyages of zheng he mini q answer key