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50 POINTS PLEASE HELP You take a Frisbee to the top of the Washington Monument and send it sailing along horizontally at a speed of 5 m/s from the very top of the structure, which is 169.2 m above the ground.
A) How long will the Frisbee remain in the air? (Remember--perfect physics world--no air resistance!)
B) How far down range will the Frisbee go (down range - horizontal distance.)?

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pixleshooterisback

Answer:

(A)

 

Set the initial height equal to gt2/2 and solve for t.

 

h0 = gt2/2

 

t = √(2h0/g)

 

h0 = 169.2 m

g = 9.8 m/s2

 

Plug in the numbers and get t in seconds.

 

(B)

 

x = vxt

 

vx = 5 m/s

t = result from part (A) in seconds

 

Plug in the numbers and get x in meters.

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