Fred moves past Alice at a constant speed c and Alice notes that Fred's clock is running at a rate seven-eighths that of her clock. What is Fred's speed (in terms of c) relative to Alice

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

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okay, ima .

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answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg