The correct answer is: [B]: " 10.4 meters per second " .
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Step-by-step explanation:
To solve:
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100 meters / 9.63 sec = __?__ meters per {single second; or "unit second} ;
→ (100 ÷ 9.63) meters per second ;
= (10.3842159916926272) meters per second ;
→ round to the nearest "tenth" ;
→ as specified in the question:
→ Note: " 10.38..." ;
→ The "tenths" place contains the digit: "3" .
→ Do we round "up" ( i.e. , to: " 10.4 ? ) ;
→ or, do we round "down (i.e. , to " 10.3 " ?) ;
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→ If the next digit (i.e., the "hundredths" place); is " 5 or greater" ;
→ (i.e ., " 5, 6, 7, 8, or 9 ") , we round up to " 4 " ; (i.e. , " 10.4 " ) .
→ If the next digit (i.e., the "hundredths" place) ; is "4 or lesser" ;
→ (i.e., "4, 3, 2, 1, or 0") , we round down to " 3 " ; (i.e. , " 10.3 ").
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→ In our case, we have: " (10.3842159916926272) meters per second " .
→ Take note of the "10.38...." . In this case, the "hundredths" place is: "8" ;
→ which is "5 or greater" (i.e., " 5, 6, 7, 8, or 9 ").
→ As such, to round this value to the nearest "tenth", we round up; and use "4" ; as the "tenths" place: " 10.4 " .
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Thus, the correct answer is: " 10.4 meters per second" ;
→ or, write as: " 10.4 m / s " ;
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→ which is: Answer choice: [B]: " 10.4 meters per second " .
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