Just need someone to double check

  1. Could anyone please double check my answers to each of the following statements. Thanks

    1. The problem statement, all variables and given/known data

    Determine which of the following moving objects obey the equations of projectile motion.

    True A stone is thrown under water.
    True A ball is thrown in an arbitrary direction.
    True A jet airplane crosses the sky with its engines thrusting the plane forward.
    True A rocket moves through the sky after its engines have failed.
    False A rocket leaves the launch pad.
  2. jcsd
  3. PhanthomJay

    PhanthomJay 6,333
    Science Advisor
    Homework Helper
    Gold Member

    Not all your answers are correct, even when air resistance is neglected (which should have been stated in the problem). Hint: There is only one force acting on an object in ideal projectile motion problems. What is that force? How does it affect your answers?
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