2/77 If the tennis player serves the ball horizontally (0 = 0), calculate its velocity v if the center of the ball clears the 36-in. net by 6 in. Also find the dis- tance s from the net to the point where the ball hits the court surface. Neglect air resistance and the effect of ball spin. A 8.5' 36" 39' Problem 2/77

The basketball player likes to release his foul shots with an initial speed vo- 23.5 ft/sec. What 2 values of the initial angle 0 (0₁ <0₂) will cause the ball to pass through the center of the rim? Neglect clearance considerations as the ball passes over the front portion of the rim. 7.0' Answers: 0₁- 0₂- 13.75' 38.9 i 64.6 10'

if you have two vectors : A=-2i+3j-k B=-i+3j-k    find : 1. -3B 2. 2A-3B 3. Direction of A 4. Direction of B

Two cannons are moumod as shown in the dewving and niggod to fire simulianeousiye They are used in a circus act in which two clowns serve as buman cannon balls. Tho clowns are dad boward pach other and collide at a helet of 1.00 m abone he muzzles of the cannons, Clown A is Isonebed at a 75,0° an- le, with a speed of 9,00 m/&. The horixontal separation betwen he clowns as they lexve the cannons is 6.00 p. Find the launch peed ty and che lunch angle &, (-45.0 ) for clown B.