A golfer hits a golf ball with an initial velocity of 160 ft/s at an angle of 25° with the...

Question

A golfer hits a golf ball with an initial velocity of 160 ft/s at an angle of 25° with the horizontal. Knowing that the fairway slopes downward at an average angle of 5°, determine the distance d between the golfer and point B where the ball first lands.

Robert · Accepted Answer

coordinates are 
( d cos 5 , - d sin 5 ) 
x = 160 cos 25 * t ; 
y = 160 sin 25 * t - 0.5 * 32 * t^2 ; 
OR 
d cos 5 = 160 cos 25 * t ; or t = ( 6.8698 e -3 ) d ; 
- d sin 5 = 160 sin 25 * t - 0.5 * 32 * t^2 ; 
so - d sin 5 = 160 sin 25 * [( 6.8698 e -3 ) d ] - 0.5 * 32 *[ ( 6.

A golfer hits a golf ball with an initial velocity of 160 ft/s at an angle of 25° with the horizontal. Knowing that the fairway slopes downward at an average angle of 5°, determine the distance d...

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