A rocket burns fuel at the rate of 10kgs-1 and ... - JAMB Physics 1993 Question
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
A
2.5 x 107N
B
5.0 x 104N
C
5.0 x 102N
D
2.0 x 10-3N
correct option: b
Thrust = \(\frac{\text{mass x velocity}}{time}\)
= 10 x 5 x 103
= 5.0 x 104N
= 10 x 5 x 103
= 5.0 x 104N
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