A toy car that is 0.12 m long is used to model the actions of an actual car that is 6 m long. which ratio shows the relationship between the sizes of the model and the actual car? a. 50:1
b. 1:50
c. 5:1
d. 1:5

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.