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Worksheet: Rocket Propulsion

Q1:

What exhaust speed is required to accelerate A rocket of mass kg is in deep space. The rocket accelerates from a speed of 0.80 km/s to a speed of 1.0 km/s in a time of 5.0 s. Using 50 kg of fuel, what must be the exhaust speed to produce this acceleration?

Q2:

A large rocket has a mass of kg at takeoff, and its engines produce a thrust of N.

Find its initial acceleration if it takes off vertically.

How long does it take to reach a velocity of 120 km/h straight up, assuming constant mass and thrust?