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SAI INTERNATIONAL SCHOOL

                                    CLASS-IX   PHYSICS HOME ASSIGNMENT-10


                                                       OBJECTIVE


               MCQ [Board]

               1. Newton’s third law of motion explains the two forces namely ‘action’ and ‘reaction’
               coming into action when the two bodies are in contact with each other. These two
               forces:













               (a) Always act on the same body


               (b) Always act on the different bodies in opposite directions

               (c) Have same magnitude and direction


               (d) Acts on either body at normal to each other

               2. In a rocket, a large volume of gases produced by the combustion of fuel is allowed to
               escape through its tail nozzle in the downward direction with the tremendous speed and
               makes the rocket to move upward.























               Which principle is followed in this take off of the rocket?
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