Question on: WAEC Physics - 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
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Correct Option: C
F = ma = (\frac{mv}{t} = \frac{5 \times 10^{-2} \times 4 \times 10^{3}}{1})
= 200N
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