8. The answer is C
9. Sorry I don't know
Acceleration = (change in speed) / (time for the change)
Change in speed = (end speed) - (start speed)
Change in speed = (26 m/s) - (12 m/s) = 14 m/s
Time for the change = 6 s
Acceleration = (14 m/s) / (6 s)
Acceleration = (14/6) (m/s²)
<em>Acceleration = 2.33 m/s²</em>
<span>Gravitational force is equal to 6 kg * 9.81 m/s^2 = 58.86 N. If air resistance is 15 n up, the magniture is 43.86 N downward.</span>
ಠ_ಠ Hey, hang on.. you might've made a discovery. Nobody has tested it so how do we know? ಠ_ಠ
