Homework Help: physics

Posted by Haley on Monday, March 5, 2012 at 11:14am.

On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The free-fall acceleration on the moon is 1/6 of its value on earth. Suppose he hits the ball with a speed of 25 m/s at an angle of 28° above the horizontal.
(a) How long was the ball in flight?
(b) How far did it travel?
(c) How much farther would it have traveled on the moon than on earth?

physics - Henry, Tuesday, March 6, 2012 at 5:04pm
Vo = 25m/s @ 28 Deg.
Xo = 25*cos28 = 22.1 m/s.
Yo = 25*sin28 = 11.7 m/s.

b. Dx = Vo^2*sin(2A)/g.
Dx = 25*sin(56)/1.63 = 317.9 m.

a. Dx = Xo*T = 317.9 m.
22.1 * T = 317.9.
T = 317.9 / 22.1 = 14.38 s. = Time in
flight.

c. D'x = 317.9 - (317.9/6) = 265 m.
physics - Anna, Tuesday, September 18, 2012 at 3:04pm
whoever already answered this question was very, very incorrect. your formulas may be, but your own calculations don't even come out to the numbers you have.

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