Question

An inertial observer sees two spacecrafts S and T flying away from each other along x-axis with individual speed 0.5c, where c is the speed of light. The speed of T with respect to S is

• A. $\frac45c$
• B. $\frac43c$
• C. c
• D. $\frac23c$

Answer 1

Answer: (A)

$\frac45c$

Answer 2

The correct option is (A) :$\frac45c$