Fuel was consumed at a steady rate of 5.0 x 10 -2 kg per second
PHYSICS
WAEC 2005
Fuel was consumed at a steady rate of 5.0 x 10-2kg per second in a rocket engine and ejected as a gas with a speed of 4 x 103ms-1. Determine the thrust on the rocket
- A. 20N
- B. 80N
- C. 200N
- D. 800N
Correct Answer: C. 200N
Explanation
F = ma = \(\frac{mv}{t} = \frac{5 \times 10^{-2} \times 4 \times 10^{3}}{1}\)
= 200N
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