A nitrogen molecule with a mass of 4.7 x 10-26 kg, moving at 550 m/s, strikes the wall of a container and bounces back at the same speed. a) What is the impulse the molecule delivers to the wall? b) If there are 1.5 x 1023 collisions each second, what is the average force on the wall? c) For a constant force, if the duration of impact upon an object is doubled, how is the impulse affected?

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