Explain, using appropriate laws of motion, why the air exerts a force on the engine in the forward direction.

This question is taken from AQA 2016 question 1 part 2, http://filestore.aqa.org.uk/sample-papers-and-mark-schemes/2016/june/AQA-74071-QP-JUN16.PDF

The force is acting on the air by the engine. By Newton's 2nd law, force is the rate of change of momentum. The air is acted by a force, so it accelerates and has a change in magnitude.

By Newton's 3rd Law, all forces between two objects exist in equal magnitude and opposite direction. When the air is acted to the right by the engine, there is an equal and opposite force acted on the engine. The air moves backward, so the engine must move forward.

WL
Answered by William L. Physics tutor

6357 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

Why does a feather fall at the same rate as a hammer on the Moon?


From the definition of the decay constant for nuclear decay, derive the exponential decay equation.


explain how a cyclotron produces a high energy electron


Explain how a bright line is formed by the diffraction grating at the first order diffraction angle


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning