Question

A rocket of mass 1000 kg exhausts gases at a rate of 4 kg/sec with a velocity 3000 m/s. The thrust developed on the rocket is

• A. 12000 N
• B. 120 N
• C. 800 N
• D. 200 N

Answer 1

The correct option is A

12000 N

$F=u\left(\frac{dm}{dt}\right)=3000\times 4=12000N$