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Homework Help: Linear Motion and free fall

  1. Apr 4, 2016 #1
    • Member advised to use the formatting template for questions posted to the homework forums
    I. Free Fall Motion

    A mass m = 544 g is thrown straight up with an initial speed of 3.50 m/s from a height of h = 2.50 m Neglecting a drag force,

    1. The acceleration of the object while it moves up.
    2. The acceleration of the object at the highest point.
    3. The maximum height that the mass reaches.
    4. The total time the object is in the air if it is allowed to freely fall to the ground.
    5. The speed the mass has just before it hits the ground.
    6. The speed of the mass at the highest point.
    7. The speed of the mass at h = 2.50 m on its return trip down.

    My prof. was very vague on our equations to use

    from what I understand I was able to get

    1. Acceleration while moving up = -9.81m/s^2
    2. Acceleration = 0
    4. .357s

    feel free to suggest relevant equations for these problems.
  2. jcsd
  3. Apr 4, 2016 #2


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    Science Advisor
    Homework Helper
    2017 Award

    Hello Newb, :welcome:

    The equations you need are called the SUVAT equations, in particular these. Doc Al has summarized them here
  4. Apr 4, 2016 #3


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    Gold Member

    What type of equations have you learned? Nothing in your textbook?
  5. Apr 4, 2016 #4
    My professor didn't want us to use the book, and lectured on the philosophy of physics problem solving, but he never reviewed a problem involving a projectile moving up and then down
  6. Apr 4, 2016 #5


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    Gold Member

    That’s horrible . . . do BvU’s links help?
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