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SPH4U unit 1 summary

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Unit 1 summary that covers all topics, written by an A+ student.

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  • December 16, 2022
  • 4
  • 2022/2023
  • Summary
  • Secondary school
  • 12th Grade
  • 1
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Prerequisite
Significant digits

¤Used to write very large or small numbers in a convenient way

¤Only ONE number in front of the decimal point.

Rules for significant digits

¤All non-zero numbers are significant

¤Zeros between numbers are significant

¤Zeros at the END of a number with a decimal place are significant

¤Zeros at the END of a number with no decimal place are usually not significant

¤Zeros at the BEGINNING of a number are not significant

Significant Digit Use

¤In general, you want to give your answer using the LEAST number of significant digits given in the
question.

Rounding

¤If the next number is a 5 with nothing else behind it, even digits stay the same and odd digits are
increased by one

¤If the next number is a 5 with other digits behind it, always round up


Unit 1
Equations Of Motion

• Vf2= Vi2 + 2aΔd
• Vf= vi+at
• Δd= vit + ½ at2
• Δd= vft- ½ at2

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