Two Spaceships Are Traveling Through Space at Speeds of 0

question 3

Short Answer

Two spaceships are traveling through space at speeds of 0.600c and 0.900c, respectively,
with respect to Earth. If they are headed directly toward each other, what is their
approach speed (in terms of the speed of light) as measured by the captain of either ship?

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Definitions:

Sequential Method

A process approach where tasks or operations are performed one after another in a specific order.

ABC

Activity-Based Costing, a method of assigning overhead and indirect costs to specific products or activities based on their use of resources.

Step-Down Method

A method of allocating support department costs to production departments that considers some inter-support-department services in a sequential or step-down fashion. Also known as the sequential method.

Direct Method

A method of preparing the cash flow statement where major classes of gross cash receipts and payments are disclosed.