Physics:Projectile Motion

Question

A golfer hits a golf ball with an initial velocity of 48m/s at an angle of 25degrees with the horizontal.knowing that the fairway slopes downward at an average angle of 5degrees, determine the distance d between the golfer and point B where the ball first lands.

Answer 1

The answer by paramoun is WRONG.  First, the formula she used is wrong.  Second, she did not account for the slope of the fairway.

The correct answer is d = 213.7 m

Answer 2

Given:

initial velocity = 48 m/s

angle = 25

g = - 9.8 m/s^2  (constant)

distance along the x axis or range = ?

then look for the formula in getting range,,so it is..

R = - initial velocity * sin (2*angle) / g (then substitute the given)

   = (- 48 m/s)^2 sin (2)(45) / - 9.8 m/s^2  (simplify first the numbers

                        after  word "sin")

   = (-48 m/s)^2 sin 90 / -9.8 m/s^2 /-9.8m/s^2  (squarred first 48 (excluding the negative sign) then multiply its product to sin 90..and afterwards affix the negative sign into it)

   = -2304 m^2/s^2 / -9.8 m/s^2  (then simplify.,,)

R = 235.10 m --------ANSWER

  

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