QB Throws Football: Speed, Angle, & Distance Needed to Catch

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SUMMARY

The discussion focuses on calculating the speed at which a receiver must run to catch a football thrown by a quarterback at an initial speed of 22 m/s and an angle of 34 degrees. The equations for projectile motion are applied to determine the range (R) and time of flight (T) of the football. The receiver must cover the distance of (21 - R) meters in the time equal to T, leading to the formula for the receiver's speed as Speed = (21 - R) / T. R represents the horizontal distance covered by the projectile.

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a quaterback throws a football towards a reciever with an initial speed of 22m/s, at an angle of 34 degrees above the horizontal. At that instant, the reciever is 21 m from the quarterback. The acceleration of gravity is 9.8 m/s ^2. WIth what constant speed should the reciever run in order to catch the football at the level at which it was thrown? Answer in units of m/s.
 
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What are the important equations for projectile motion? There should be two you should be using, one for the horizontal direction and one for the vertical.
 
Applying the equations determine range R and time of flight T of the football. To catch the football, the reciever must cover a distance (21 - R) m in time equal to time of flight T. Speed of reciever = (21-R)/T.
 
what does the variable R represent?
 
R represents the horizontal distance covered by the projectile.
 

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