A jet engine develops a thrust of 270Ns when the velocity of the exhaust gases relative to the engine is 300ms-1. What is the mass of the material ejected per second?
- 81.00kg
- 9.00kg
-
0.90kg
- 0.09kg
The correct answer is: C
Explanation
Thrust = force x timethrust = \(\frac{m(v - u)}{t}\) x \(\frac{t}{1}\)
270 = m(300 - 0)
m = 0.90kg