Question #6425979Single Choice

Physics

Question

A 2 kg object is moving downward, and in addition to the gravitational force, it is also acted upon by two other external forces: upward and downward. These forces act on the object for 15 seconds. What is the change in the object's momentum during this time? (Take g = 10m/s2)

Options

A
    345 N·s upward
B
    45 N·s upward
C
    255 N·s downward
D
    525 N·s downward

Answer & Analysis