Lesson: Rocket PropulsionPhysics
In this lesson, we will learn how to use the rocket equation to calculate the motions of rockets and of the exhaust used to propel them.
Sample Question Videos
A large rocket has a mass of kg at takeoff, and its engines produce a thrust of N.
Find the rocket’s initial vertically upward acceleration.
How much time is required for the rocket to attain a vertically upward velocity of 33.33 m/s, assuming constant mass and thrust?
What exhaust speed is required to accelerate A rocket of mass 1,200 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?
A rocket accelerates vertically upward and reaches a speed of 132 m/s. Rocket fuel is burned, expelling 115 kg of exhaust from the rocket vertically downward at 1,360 m/s. The time taken for the rocket to complete its acceleration was 12.4 s. What was the mass of the rocket when fully loaded with fuel? Ignore air resistance.