Golf Irons Angle Degrees
Dec/100
Golf Irons Angle Degrees
For how much more time was the ball in flight??
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a 6 iron. The acceleration due to gravity on the moon is 1/6 of its value on earth. Suppose he hits the ball with a speed of 30.0 m/s at an angle 60.0 degrees above the horizontal.
How much farther did the ball travel on the moon than it would have on earth?
For how much more time was the ball in flight?
No, I prefer not to use or memorize formules, it's better to do it like this, so you will understand it better :
In the moon :
We have the velocity : 30 m/s and making and angle with the horizontal of 60º.
Then, you can find both components : Vx and Vy :
Vx = 30*cos(60) = 15 m/s
Vy = 30*sin(60) = 15*sqrt(3) m/s
In the moon = g = 9.8 / 6 = 1.63 m/s^2
Now, let's find the flying time, it's not that difficult, just find the time the ball takes to reach the maximum altitude :
Just using the vertical component of the velocity
Maximum altitude, Vf = 0 >>> final speed
0 = 15 - 1.63*t
t = 9.2 (s)
The total flying time = 2t = 18.4 s
then, the ball traveled : X = Vx*18.4 = 15*sqrt(3)*18.4 = 478 m
In the Earth : g = 9.8 m/s^2
So using the same :
0 = 15 - 9.8t
t = 1.53 s
total flying time = 3.06 s
then : the ball would have traveled : X = 15*sqrt(3)*3.06 = 80 m
Answers : in the moon : X = 478
in the Earth = 80
the ball traveled 398 more meters than in the earth.
in the moon the ball took : 9.2 s
in the earth the ball took : 1.53 s
The ball took 7.67 more seconds in the moon than in Earth
That's it
I think that's the best way to do it
Facts About Golf Flyers
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Nike VR_S Forged Irons $999.95 Nike VR_S Forged Irons Our most technically advanced forged irons combine high-speed performance and meticulous craftsmanship for longershots and better feel. Our highest COR face in a forged iron, and a design that moves weight off the face, combined tooptimize launch for higher, straighter shots and maximum carry. It's the iron that puts speed at a premium. Features: Nike Golf VR_S Forged Irons Speed that Leads: Constructed of high-strength, ultra-thin stainless steel with NexCOR variable face-thickness technology, the VR_S clubface delivers a high COR face for more distance. The new face construction expands the maximum COR zone around the middle and lower area of the face where the majority of iron shots struck Designed for Distance: By positioning weight off the face with an undercut construction, the Nike PowerBOW technology produces a faster, higher launch for maximum carry, straighter ball flight and steeper descent to hold greens. Speed Plus Constrol: At a mere 90 grams, Dynalite 90 steel shafts feature ultimate control even with increased swing speed. Specifications: Nike Golf VR_S Forged Irons Club Hand Loft Length Lie Angle Bounce Offset Head Wt. Swing Wt. SteelGraphite 3 RH 20? 39 60? 2.0? 0.230 243.0g C9-D1 4 RH 22? 38.5 60.5? 2.0? 0.190 249.5g C9-D1 5 RH 25? 38 61? 3.0? 0.180 256.0g C9-D1 6 RH 28? 37.5 61.5? 4.0? 0.170 262.0g C9-D1 7 RH 31? 37 62? 4.0? 0.160 268.5g C9-D1 8 RH 35? 36.5 62.5? 5.0? 0.140 275.0g C9-D1 9 RH 40? 36 63? 6.0? 0.120 281.5g C9-D1 PW RH 45? 35.75 63.5? 7.0? 0.100 286.0g C9-D1 AW RH 51? 35.5 63.5? 9.0? 0.100 291.0g C9-D1 SW RH 56? 35.25 64? 9.0? 0.080 300.0g D1-D3 Shaft: Nippon N.S. Pro 850GH HT Flex Weight Torque Tip OD Butt OD Trajectory S 98.0g 1.7? .355 Taper .600 HIGH R 94.5g 1.9? .355 Taper .600 HIGH |
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