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Posted by on Friday, October 8, 2010 at 3:11am.

An arrow is launched vertically upward from a crossbow at 98.2 m/s. Ignoring air friction, what is its instantaneous acceleration 4.20 s into the flight?

  • Physics - , Friday, October 8, 2010 at 3:16am

    The acceleration will be -g, which is -9.8 m/s^2, at all times. It is directed downward.

    It makes no difference what the initial speed or the elapsed time is. Those numbers are put there to confuse you.

  • Physics - , Friday, October 8, 2010 at 3:18am

    Thank you!

  • Physics - , Saturday, October 9, 2010 at 6:58pm


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