High School Physics
posted by . .
The player kicks a football with an initial speed of v0 = 98 ft/s. Determine the two possible values for the angle of the kick, theta. The distance of the football field is 126 ft. Also determine the corresponding time at each of these two angles.

Range = Vo^2*sin2A/g = 126 Ft.
98^2*sin2A/32 = 126
98*2*sin2A = 4032
sin2A = 0.42
2A = 24.8o
A = 12.4o.
Or A = 180  12.4 = 167.6o.
Range = Xo * T = 126 Ft.
98*cos12.4 * T = 126
T = 1.32 s. = Time in air.
Tr = T/2 = 1.32/2 = 0.658 s.=Rise time.
= Time at 12.4o.
Tf = Tr = 0.658 s. = Fall time. = Time
at 167.6o.
Respond to this Question
Similar Questions

Physics
A football player kicks a football with an initial velocity of 30m/s at an angle of 55 degrees relative to the flat ground. a)what is the speed of the football at its highest point b)find the highes point reached c)find the total time … 
High School Physics
The player kicks a football with an initial speed of v0 = 98 ft/s. Determine the two possible values for the angle of the kick, theta. The distance of the football field is 126 ft. Also determine the corresponding time at each of these … 
High School Physics
The player kicks a football with an initial speed of v0 = 98 ft/s. Determine the two possible values for the angle of the kick, theta. The distance of the football field is 126 ft. Also determine the corresponding time at each of these … 
Physics.
A punter kicks a football at an angle of 45 degrees to the ground. The football has an initial velocity of 25 m/s, make a diagram and calculate: a) How long was the football in the air? 
physics
A football, if it was kicked when initially at rest, is inflated such that it will move in the direction of the kick with h=0.8 of the kicking foot's velocity We now consider the same ball being kicked while it's moving towards the … 
physics
A player kicks a football at an angle of 45 degree with initial speed of 20 metre per second a second player on the goal line 60 metre away in the direction of a kick start training to receive the ball at that instant find the constant … 
physics
4. Assuming that ball 1 was thrown with an initial velocity of 5 m/s, how far will it land away from the building horizontally? 
AP PHSYICS DUE LATE HOMEWORK HELP!!!
4. Assuming that ball 1 was thrown with an initial velocity of 5 m/s, how far will it land away from the building horizontally? 
Physics
A football player kicks a ball of mass 1.534 kg across the field using a constant force of 13.4 N over a distance 30.0 m. How much work does the football player do? 
physics
A player kicks a football at an angle of 45 degree with initial speed of 20 metre per second a second player on the goal line 60 metre away in the direction of a kick start training to receive the ball at that instant find the constant …