Newton's laws of motion

Challenge #27 in the Sevens series. Hosted by Dutch Newchurch.
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This is the third in the series: ‘Seven Scientific Theories’. Imagine you have been asked to provide one or two creative and inspirational illustrations for a textbook, on Newton's laws of motion. A spacecraft in free fall (the first law)? A dragster burning rubber (the second law)? A heeling yacht (the third law)? An interceptor with flaming afterburners (the second or third law)? A cannon firing (the third or second law)? (The whole series is here: https://www.dpreview.com/forums/thread/4236850 )
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Canon Firing
by BBrooks
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A Canon ball exploding out of the barrel normally exerts an opposite reaction force to the canon. Fortunately, most demonstrations do not use live ammo. But they look very interesting and most camera shutters are snapped as a natural response to the explosion!
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Submitted: Monday, 5th February, 2018 23:56 (GMT)
Taken: Sunday, 6th August, 2017
Focal length: 80 mm
Shutter speed: 1/400 sec
Aperture: F4
ISO: 400
Notes: Photo cropped and resized.
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