MCQ
A jet engine works on the principle of
- AConservation of mass
- BConservation of energy
- ✓Conservation of linear momentum
- DConservation of angular momentum
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The initial velocity of the particle is $5 \sqrt{2}\, ms ^{-1}$ and the air resistance is assumed to be negligible. The magnitude of the change in momentum between the points $A$ and $B$ is $x \times 10^{-2}\, kgms ^{-1} .$ The value of $x ,$ to the nearest integer, is ...... .



