A baseball is hit at ground level with a velocity of 46m/s at an angle of 30° with the horizontal. The ball lands at ground level on the other side of the fence. (Fortunately, Kyle was not pitching).
a) How long is the ball in the air?
b) How high does the ball go?
c) How far did the ball land from its starting point?

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c

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.