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A bird picks up a golf ball and drops it while flying 81 feet above the ground. The ball hits the top of a 32-foot-tall pine tree then bounces down to the ground. After how many seconds does the ball hit the tree?

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1 vote
its unable to answer this because it never says how long it yoke to hit the tree

User Khalia
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A bird picks up a golf ball and drops it while flying 81 feet above the ground

The ball hits the top of 32 foot - tall pine tree

Now distance travelled by the ball till hitting the pine tree = 81 - 32

= 49 feet

now we have to convert feet into metre

49 feet = 14.93 metre

By applying formula s = ut + 1/2at^2

here initial velocity u = 0

And acceleration is g

therefore, 14.93 = 1/2*9.8*t^2

i.e. 14.93 = 4.9*t^2

i.e. t^2 = 14.93/4.9 = 3.047

i.e. t = 1.75 secs

Therefore ball hits the tree after 1.75 secs

User Sohel Islam Imran
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