Question

Two stones are projected from the top of the tower 100 M high with a velocity of 20 metre per second one is vertically upwards and other is vertical downward calculate the time each stone take to reach the ground and velocity with a start in the ground

Answer 1

hey dear,

check your answer

Answer 2

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հίί ʍαtε_______✯◡✯
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һєяє' ʏȏȗя ѧṅśwєя ʟȏȏҡıṅɢ ғȏя________
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✯♦Consider, a stone fall from the top of a tower (h) and distance covered by a stone at time  t

♦♦Height (h) = 100 m

$x - x _{0} = u_{0}t + \frac{1}{2} {gt}^{2}$

Initial velocity  = 0

or, 100 - x = 0 +1/2 gt^2.________eq (1)

♦♦♦♦Distance covered by stone from ground

Where initial velocity (u0) = 20m/s

▶x = u0t  - 1/2 gt^2

or, x =( 20X t) - 1/2 gt^2  _____eq (2)

▶Combine .....eq (1) and .....eq (2)

♦So, 100 = 20t

t = 4

therefore,

___x = 20X4 -1/2 X9.8X 4^2
 = 80 - 78.4 = 1.6 m

$hope \: it \: helps$
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