Physics

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An object is dropped from rest.
What is its instantaneous speed when it has
been in motion for 7 s? The acceleration of
gravity is 9.8 m/s
2
.
Answer in units of m/s

  • Physics -

    Consider only vertical component (because the object does not move horizontally)
    Use formula v=u+at
    v=0+9.8(7)
    v=68.6m/s

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