a stone is dropped from roof of house reaches the ground in 1.5 seconds calculate the distance of the roof from the ground and the velocity of the stone with which it strikes the ground. (g=10m/s²)
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!! Hey Mate !!
your answer is ---
since, a stone is dropped from roof of house reaches the ground in 1.5 second
such that , t = 1.5 s and initial velocity u=0
Let, distance of roof from ground is equal to the distance covered by stone be h.
according to formula
h = ut + 1/2at^2
=> h = 1/2×10×2.25
=> h = 11.25
therefore , distance of the roof from the ground is 11.25 metre.
Now, velocity of stone is
v = u + at
=> v = 10×1.5
=> v = 15m/s
Hence, the distance of the roof from the ground and the velocity of the stone with which it strikes the ground is 11.25 metre and 15m/s respectively .
_____________________
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Hope it helps you
================
your answer is ---
since, a stone is dropped from roof of house reaches the ground in 1.5 second
such that , t = 1.5 s and initial velocity u=0
Let, distance of roof from ground is equal to the distance covered by stone be h.
according to formula
h = ut + 1/2at^2
=> h = 1/2×10×2.25
=> h = 11.25
therefore , distance of the roof from the ground is 11.25 metre.
Now, velocity of stone is
v = u + at
=> v = 10×1.5
=> v = 15m/s
Hence, the distance of the roof from the ground and the velocity of the stone with which it strikes the ground is 11.25 metre and 15m/s respectively .
_____________________
================
Hope it helps you
================
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