Question

Mark all of the following that could be true of an object in free fall a. The particle may be moving with an acceleration that is not constant. D.The object may be momentarily at rest C. The object may be moving upward d. The object may be moving downward e.The particle may be moving with constant speed QUESTION 2 Match each of the following mathematical expressions with the correct quantity of motion (and unknown) it calculates a Speed (squared) as a function of position Velocity as a function of time (unknowns C. Position as a function of time (Vo unknown) and Xf ) 2 Position as a function of time (Vf unknown) e.Position as a function of time (d unknown)

Answer 1

" When an object falls freely, then it ""moves down"" with an acceleration of ""9.8 m/s^2"" (constant) * Here, (a) = (g) = (9.8 m/s^2) which is constant acceleration i.e it covers ""equal velocities"" in ""equal intervals"" of time. i.e, change of velocities in successive interval is same but not ""constant velocity"" * Now, acceleration of object is non-zero, here object may be ""momentarily"" at rest Hence, (b), (d) are correct."