physics
posted by Ed .
A football kicker lines up to kick a game winning kick. The goalpost is 30m away and the ball must clear the 3.3m high crossbar. If the kick leaves his foot at an angle of 35 degrees, how fast must the kick be to clear the bar?

Vo^2*sin(2A)/g = Dx = 30 m.
Vo^2*sin(70) / 9.8 = 30,
Vo^2*0.095887 = 30,
Vo^2 = 30 / 0.095887 = 312.9,
Vo = 17.69 m/s.
Respond to this Question
Similar Questions

physics
A place kicker must kick a football from a point 36.0 meters (about 40yds)from the goal. as a result of the kick, the ball must clear the crossbar, which is 3.05 meters high. When kicked the ball leaves the ground with a speed of 20.0 … 
physics
I know this has been posted many times but I keep trying and cannot get the right answer, A place kicker must kick a football from a point 39.9 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 … 
Physics
A place kicker must kick a football from a point 37.1 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ground with a speed of 19.8 m/s at an angle of 53° … 
physics
A place kicker must kick a football from a point 38.2 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ground with a speed of 20.6 m/s at an angle of 53° … 
physics
a place kicker must kick a football from a point 32.0 m from the goal. As a resultof the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 23.0 m/s at an angle of … 
physics
A place kicker must kick a football from a point 34.0 m (about 37 yd) from the goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 21.0 m/s … 
Physics
a place kicker must kick a football from a Lint 36 meters from the goal. As a result of the kick, the ball must clear the crossbar, which is 3.04 meters high. When kicked, the ball leaves the ground with a speed of 20 meters per second … 
Physics
A place kicker must kick a football from a point 33.0 m (about 36 yd) from the goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 20.0 m/s … 
Physics
A place kicker must kick a football from a point 31.2 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ground with a speed of 21.3 m/s at an angle of 53° … 
Physics
A place kicker must kick a football from a point 31.2 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ground with a speed of 21.3 m/s at an angle of 53° …