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Show that it is possible to outrun a light ray, if you're given a sufficient head start, and your feet generate a constant force.

Short Answer

Expert verified

It is possible to outrun a light ray.

Step by step solution

01

Write the given data from the question.

The force generated by the force is constant.

The initial velocity is constant.

02

Show that it is possible to outrun a light ray.

The expression for position as function of time, with the initial velocity is zero and generated force is constant is given as follows.

x(t)=mc2F[1+(ftmc)2-1]+v0t

Here,m is the mass,c is the speed of the light,F is the generated force,v0 is the initial force andt is the time.

The expression for the position of the photon is given by,

xp(t)=ct

The time-position graph is shown below.

From the above graph, the photon which starts fromt<0 ca easily catches the person in the hyperbolic motion but the photon which starts fromt>0 would not be able to catch up the person in hyperbolic motion.

Therefore, the outrun is possible.

Hence it is possible to outrun a light ray.

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