PHYSICS · Multi-part · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
A spacecraft, of mass 12500 kg, has a rocket engine that ejects 4.0 kg of hot gas every second at a speed of 250 ms−1 . Calculate
(1) the force on the spacecraft.
(2) the acceleration of the spacecraft.
(3) the impulse felt by the spacecraft if the rocket engine were used for a time of 20 s .
(4) the change in speed of the spacecraft.