Question
Physics Question on laws of motion
The motion of a rocket is based on the principle of conservation of
A
linear momentum
B
mass
C
angular momentum
D
kinetic energy.
Answer
linear momentum
Explanation
Solution
Taking rocket + fuel as system total linear momentum must be conserved since there is no external force. As the exhaust moves out with high speed towards the Earth , the rocket moves with same momentum away from the earth as the net momentum should be zero .