Posted by chibuzor on Wednesday, January 30, 2013 at 6:16am.
a soccer player kicked a ball at an angle of 37degree to the horizontal.if the range covered by the ball is 240.3m calculate (a).the initial velocity of projection(.b).the time of flight.(c).the maximum time attained

mechanics  Henry, Saturday, February 2, 2013 at 8:32pm
a. Range = V0^2*sin(2A)/g = 240.3 m.
Vo^2*sin(74)/9.8 = 240.3
Vo^2*sin(74) = 2354.94
Vo^2 = 2354.94/sin(74) = 2449.84
Vo = 49.5 m/s. = Initial velocity.
b. Range = Vo*cosA * T = 240.3
T=240.3/Vo*cosA=240.3/49.5*cos37=3.88 s.
= Time of flight.