An object that is 3.4 mm tall is placed 25 cm from the vertex of a convex spherical mirror. The radius of curvature of the mirror has magnitude 73 cm. Required:
a. How far is the image from the vertex of the mirror?
b. What is the height of the image?

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?