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College physics

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A toddler is on a playground swing. When she is right in the middle going forward (to the right), then ...
a).her tangential acceleration is maximal to the right.
b) her tangential acceleration is zero.
c) her tangential acceleration is maximal to the left.
d) her kinetic energy is minimal.
e) her velocity is zero.
f) none of the above is true.

  • College physics -

    When she is at the bottom of the swing:
    There is no horizontal force on her from gravity or from the swing chains. All forces are vertical.
    Therefore there is no horizontal (tangential) acceleration.

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