A spaceship travels at 0.776c relative to Earth. If the spaceship fires a small rocket in the forward direction, how fast (relative to the ship) must it be fired for it to travel at 0.926c relative to Earth?

Respuesta :

Answer:

The velocity of rocket relative to ship is [tex]2.97\times10^{8}\ m/s[/tex]

Explanation:

Given that,

Velocity of spaceship relative to earth [tex]v_{se}=0.776c[/tex]

Velocity of rocket relative to earth [tex]v_{re}=0.776c[/tex]

We need to calculate the velocity of rocket relative to ship

Using formula of relativistic velocity

[tex]v_{rs}=\dfrac{v_{re}+v_{es}}{1+\dfrac{v_{re}v_{es}}{c^2}}[/tex]

Put the value into the formula

[tex]v_{rs}=\dfrac{0.776c+0.926c}{1+\dfrac{0.776c\times0.926c}{c^2}}[/tex]

[tex]v_{rs}=c\times(\dfrac{0.776+0.926}{1+0.719})[/tex]

[tex]v_{rs}=0.990c[/tex]

[tex]v=2.97\times10^{8}\ m/s[/tex]

Hence, The velocity of rocket relative to ship is [tex]2.97\times10^{8}\ m/s[/tex]