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Four balls slide down a cycloid curve from different positions, but they arrive at the bottom at the same time. The blue arrows show the points' acceleration along the curve. On the top is the time-position diagram. Objects representing tautochrone curve
Two male Hybrid III crash test dummies inside a Subaru Outback.. A crash test dummy, or simply dummy, is a full-scale anthropomorphic test device (ATD) that simulates the dimensions, weight proportions and articulation of the human body during a traffic collision.
Ballistic training, also known as compensatory acceleration training, [1] [2] uses exercises which accelerate a force through the entire range of motion. [ 1 ] [ 3 ] It is a form of power training which can involve throwing weights, jumping with weights, or swinging weights in order to increase explosive power. [ 4 ]
Alternatively, acceleration via electromagnetic field generation may be employed in which case the tube may be dispensed with and a guide rail substituted. A weapons engineer or armourer who applies the scientific principles of ballistics to design cartridges are often called a ballistician.
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This schlieren image of a bullet travelling in free-flight demonstrates the air-pressure dynamics surrounding the bullet.. External ballistics or exterior ballistics is the part of ballistics that deals with the behavior of a projectile in flight.
In physics and engineering, a free body diagram (FBD; also called a force diagram) [1] is a graphical illustration used to visualize the applied forces, moments, and resulting reactions on a free body in a given condition. It depicts a body or connected bodies with all the applied forces and moments, and reactions, which act on the body(ies).
A non-inertial reference frame (also known as an accelerated reference frame [1]) is a frame of reference that undergoes acceleration with respect to an inertial frame. [2] An accelerometer at rest in a non-inertial frame will, in general, detect a non-zero acceleration. While the laws of motion are the same in all inertial frames, in non ...