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Muskan

  • 3 years ago

calculates the acceleration of a body starting from rest and has a speed of 20m / s after traveling 100m

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  1. Hashir
    • 3 years ago
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    |dw:1342777028474:dw|

  2. Hashir
    • 3 years ago
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    |dw:1342777061960:dw|

  3. Hashir
    • 3 years ago
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    |dw:1342777080539:dw|

  4. lgbasallote
    • 3 years ago
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    you are given the initial speed which is 0 (because it started from rest) you are given distance which is 100 m you are given final speed which is 20 m/s then you're looking for acceleration therefore you can use the formula \[V_2 ^2 = V_1 ^2 + 2ad\] where V2 is final speed V1 is initial speed a is acceleration d is distance so now just substitute \[20^2 = 0^2 + 2a(100)\] \[400 = 200a\] divide both sides by 200 \[\frac{400}{200} = a\] \[a = 200 m/s^2\]

  5. lgbasallote
    • 3 years ago
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    uhmm oops..should be \[a = 2 m/s^2\] sorry haha

  6. lgbasallote
    • 3 years ago
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    do you get it @Muskan ?

  7. Muskan
    • 3 years ago
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    yess

  8. lgbasallote
    • 3 years ago
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    glad to hear that :)

  9. Muskan
    • 3 years ago
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    :)) thnx

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