A rocket burns fuel at the rate of 10kgs-1 and ejects it with velocity of 5 x 103ms-1. The thrust exerted by the gas on the rock is
- 2.5 x 107N
-
5.0 x 104N
- 5.0 x 102N
- 2.0 x 10-3N
The correct answer is: B
Explanation
Thrust = \(\frac{\text{mass x velocity}}{time}\)= 10 x 5 x 103
= 5.0 x 104N