A cannonball is fired with a velocity of 559 m/s. If the cannon is aimed 28 ° above the ground, how far away does the cannonball land? Ignore air resistance and use 9.8 m/s2 for acceleration due to gravity.

The signboard truss is designed to support a horizontal wind load of 735 lb. a separate analysis shows that 5/8 of this force is transmitted to the center connection at c and the rest is equally divided between d and b. calculate the forces in members be and bc. the forces are positive if in tension, negative if in compression.