science
Grade-9
Easy

Question

The acceleration of section C is ____  m/s2.

  1. 6.66
  2. 7.66
  3. 6.89
  4. 8.9

hintHint:

6.66

The correct answer is: 6.66


    Given:
    V= 30ms-1

    V= 50ms-1
    t1 = 5s 
    t2 = 8s
    Solution:
    A c c e l e r a t i o n space equals space fraction numerator v subscript 2 space end subscript minus space v subscript 1 over denominator t subscript 2 space minus space t subscript 1 end fraction
A c c e l e r a t i o n space equals space fraction numerator 50 space minus space 30 space over denominator 8 space minus space 5 space end fraction space equals space 20 over 3 space equals space 6.66 space m s to the power of negative 2 end exponent

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