Question

Please solve this question in copy and send the pic please

Answer 1

The question will be solved by Newton's second law.

Initial velocity = 4 m/s

Final velocity = 0 m/s

Mass of the gas = 0.002 kg

Time taken = 2.5 s

Change in momentum = Final momentum - initial momentum

Initial momentum = $\(0.002 \times 4 = 0.008\)$ kg m/s

Final momentum = 0 kg m/s

$Force = \(\frac{0.008}{2.5}\)N$

Force = 0.0032 N

The average force acting on the balloon is 0.0032 N.

Option (2) is correct.