Physics
JAMB 1993
A rocket burns fuel at the rate of 10kgs
-1 and ejects it with velocity of 5 x 10
3ms
-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 Answer: Option B
Explanation
Thrust = \(\frac{\text{mass x velocity}}{time}\)
= 10 x 5 x 103
= 5.0 x 104N
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