EXAMPLE 1: GOLF BALL STRUCK B A golf ball of mass 50 g is struck with a
club. The force exerted by the club on the
ball varies from zero, at the instant before
contact, up to some maximum value and
then back to zero when the ball leaves the
club. Assuming that thc ball travels 200 m
and the launch angle is 45°, estimate the
magnitude of the impulse caused by the
collision
USE;
I =AP= mv - mU
V2 sin 20
1
Univer
RE
B​

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.

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters