PHYS1210 Advanced Physics

Inelastic Collision

A collision between two cars is only considered to be an inelastic collision if the cars collide but do not stick together. The colliding force will indicate the final position of the two cars. The velocities and the weights of the cars will determine the position where the cars will land. This is because they velocities and mass influence the momentum. The final velocities of the cars will determine the momentum of the two cars assuming that their masses remain the same after collision.

M₁ v₁ + m₂ v2 = m₁ v₁f + m₂ v₂f

The above equation will apply. The cars will go to a nearby distance if the velocity is small and will go further if the velocity is large. If the cars had similar masses but had different momentums, the final momentum would be distributed equally among the two cars.

Formulating one safety measure to ensure that the impact of the collision of the two cars is decreased is to ensure that the cars have larger masses, by automotive industries manufacturing cars using strong bodies like metals.this woul mean that they will acquire a lower final velocity after collision. When you increase the magnitudes of the masses of the two cars a higher velocity will not have a larger impact on the total momentum as that of the case if the two cars had a smaller magnitude of. This stipulates that increasing the magnitude of the masses of the two cars will still result in collision but the final velocities would be lower and hence the cars will not go very far after collision and this could help save lives.

Graph Displaying Motion

The importance of using graphs in lab reports is that data is being analyzed and presented quicker and more efficient way by graphing motion. The horizontal x- axis normally represents an independent variable and a vertical y-axis usually represents a dependent variable.

 It helps in understanding the actual nature of motion of a moving object and its intterjections. The motion diaplying graph orovides for a model used to indicate the initial position, current position and the projected final destination of an object in motion while analysing its velocity changes and acceleration. It also helps to estimate the average time that an be used by a particular moving object to reach an intended destination while taking into look the various occurrences that might happen on threat during the journey and how the object might respond to them.

The graph displaying motion is a simple model that represents a complex motion analysis of a moving object on the ground. This is very important as most of these complex analyses may require complicated And expensive instruments to capture and study the nature of movement.

Reference

An intuitive approach to collisions

CT Tindle - The Physics Teacher, 1998 - aapt.scitation.org

 

The effect of simultaneous motion presentation and graph generation in a kinematics lab

RJ Beichner - Journal of research in science teaching, 1990 - Wiley Online Library

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