A rolling desk chair has a mass of 8 kg and an initial velocity of 6 m/s. The chair is given an acceleration of 12 m/s² for 3s. What is the magnitude of the net force on the chair during acceleration?
96 N
48 N
144 N
288 N

Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.