An object is dropped from a height of 87m above ground level. Determine the dist

Question

An object is dropped from a height of 87m above ground level.
Determine the distance traveled during the first second in meters. Determine the final speed at which the object hits the ground in m/s. Determine the distance traveled during the last second of motion before hitting the ground in meters.
Thank you kindly! An object is dropped from a height of 87m above ground level.
Determine the distance traveled during the first second in meters. Determine the final speed at which the object hits the ground in m/s. Determine the distance traveled during the last second of motion before hitting the ground in meters.
Thank you kindly!
Determine the distance traveled during the first second in meters. Determine the final speed at which the object hits the ground in m/s. Determine the distance traveled during the last second of motion before hitting the ground in meters.
Thank you kindly!

Explanation / Answer

a) y = 0.5 at2

for t = 1s

y = 4.9 m

b) time taken to reach bottom

put y = 87 in the equation

we get

t = 4.21 s

V = Vo +at

Vo=0

that gives

V = 9.8 x 4.21 =41.3 m/s

c) distance covered in 3.2 sec is

y = 0.5 g x 3.22

50.2 m

so distance covered in last second = 87 -50.2 = 36.8m

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