When jumping down from a table to the ground, it is helpful to bend your knees when you hit the ground because...

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little

How does the entropy of steam compare to the entropy of ice?