Two rockets, A and B, approach each other as shown in the figure.A travels to the right at 0.7c while B travels to the left at 0.8c.Both speed measurements are made relative to an inertial observer.
-An apple falls from a tree and takes 4 s to reach the ground as reported by the earth-bound observer.According to the navigator's instruments, how long did it take the apple to fall?

Question

Two rockets, A and B, approach each other as shown in the figure.A travels to the right at 0.7c while B travels to the left at 0.8c.Both speed measurements are made relative to an inertial observer. 
-An apple falls from a tree and takes 4 s to reach the ground as reported by the earth-bound observer.According to the navigator's instruments, how long did it take the apple to fall?

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Two rockets, A and B, approach each other as shown in the figure.A travels to the right at 0.7c while B travels to the left at 0.8c.Both speed measurements are made relative to an inertial observer. 
-An apple falls from a tree and takes 4 s to reach the ground as reported by the earth-bound observer.According to the navigator's instruments, how long did it take the apple to fall?

Two Rockets, a and B, Approach Each Other as Shown