Question

Find the height of the qutab minar if stone is thrown from the qutab minar comes on Earth sur face in 5 second

Answer 1

Answer:

Time taken for stone to reach surface of earth : 5 sec

Acceleration due gravity : 10 m/s^2

Final velocity ( v ) = 0

Since ;

v = u - gt

-u = -10×5

u = 50 m/s

According to third equation of motion ,

v^2 - u^2 = 2gS

( 50 ) ^2 = 2 × 10 × S

2500 = 20 × S

S = 2500/ 20

S = 125 m

So , the height of qutab minar is 125 m

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