Question

1. A stone is thrown up vertically with a velocity of 14.7 ms-1 from a tower of height 49m. Find the time required to reach the ground



plz answer fast
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Answer 1

Answer:

Correct option is

B

3s

Let time for this =t

⇒s=ut−

2

1

gt

2

When Ball A returns to edge of tower, s=0.

⇒0=14.7t−

2

1

×9.8t

2

Solving this quadratic equation we get:

⇒t=0,3 sec

⇒t=3 sec