Classical Mechanics
# Momentum

A water-rocket of mass $2\text{ kg}$ blasts off from the ground. The lifting force applied on the rocket by the water is $24\text{ N},$ and the air resistance is negligible. Assuming that the mass of the water-rocket does not change, how fast will the rocket be after $5$ seconds?

The gravitational acceleration is $g=10\text{ m/s}^2.$

**in grams**?