Question

A stone is dropped from a rising balloon at a height of 76 m above the

ground and it reaches the ground in 6s. What was the velocity of the

balloon when the stone was dropped? Take g=10 m/ $s^2$.

• A. (52/3) m/s upward
• B. (52/3) m/s downward
• C. 3 m/s
• D. 9.8 m/s

Answer 1

The correct option is A

(52/3) m/s upward

Applying the equation of motion, we get,

- 76 = u (6) - $\frac{1}{2}$ 10 (36)

u = $\frac{52}{3}$ m/s (upwards)