A Particle Is Moving the +X Direction at Speed C/2

question 7

Multiple Choice

A particle is moving the +x direction at speed c/2.Another particle is moving in the -x direction at speed c/2 toward the first particle.Which of the following best describes the speed of one particle as seen by an observer moving with the other particle?

• A)c
• B)some value less than 3c/4
• C)some value more than 3c/4
• D)3c/4

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Definitions:

Mineral Deposit

A natural accumulation of minerals in quantities sufficient for economic extraction.

Younger Sediments

Sediment layers that have been deposited more recently over older layers in the geological strata.

Black Smokers

Hydrothermal vents on the seafloor that emit clouds of black material, rich in minerals like sulfides.

Copper Deposits

Concentrations of copper within the Earth that can be mined for economic value.