From a balloon rising vertically upwards as 5 m/s a stone is thrown up at 10 m/s relative to the balloon. Its velocity with respect to ground after 2 s is (assume g=10 m/s2 )

Question

From a balloon rising vertically upwards as 5 m/s a stone is thrown up at 10 m/s relative to the balloon. Its velocity with respect to ground after 2 s is (assume g=10 m/s2 ) (A) zero (B)  5 m/s  (C)  10 m/s  (D)  20 m/s

Tardigrade Admin · Accepted Answer

The initial velocity with respect to ground will be 10+5=15 m / s after 2 sec its velocity will be v =15- gt =15-10 × 2=-5 m / s Whose value is 5 m / s Once the stone is projected from balloon it will not have any impact of the balloon after that moment.

Q. From a balloon rising vertically upwards as $5 m / s$ a stone is thrown up at $10 m / s$ relative to the balloon. Its velocity with respect to ground after $2 s$ is (assume $g = 10 m / s^{2}$ )

zero

$5 m / s$

$10 m / s$

$20 m / s$

The initial velocity with respect to ground will be $10 + 5 = 15 m / s$ after 2 sec its velocity will be $v = 15 - g t = 15 - 10 \times 2 = - 5 m / s$ Whose value is $5 m / s$ Once the stone is projected from balloon it will not have any impact of the balloon after that moment.

Q. From a balloon rising vertically upwards as 5m/s a stone is thrown up at 10m/s relative to the balloon. Its velocity with respect to ground after 2s is (assume g=10m/s2 )

zero

5m/s

10m/s

20m/s

The initial velocity with respect to ground will be 10+5=15m/s after 2 sec its velocity will be v=15−gt=15−10×2=−5m/s Whose value is 5m/s Once the stone is projected from balloon it will not have any impact of the balloon after that moment.

Q. From a balloon rising vertically upwards as $5 m / s$ a stone is thrown up at $10 m / s$ relative to the balloon. Its velocity with respect to ground after $2 s$ is (assume $g = 10 m / s^{2}$ )

$5 m / s$

$10 m / s$

$20 m / s$

The initial velocity with respect to ground will be $10 + 5 = 15 m / s$ after 2 sec its velocity will be $v = 15 - g t = 15 - 10 \times 2 = - 5 m / s$ Whose value is $5 m / s$ Once the stone is projected from balloon it will not have any impact of the balloon after that moment.