A ball is launched upward with an initial velocity of 20 m/s. What is the speed and direction (hence velocity) of the ball 3 seconds into its flight? For this problem, round g=-9.8 m/s2 to g=-10 m/s2 for simplicity, and assume no air resistance of any kind is present. (a) 20 m/s upward (b) 20 m/s downward (c) 10 m/s upward (d) 10 m/s downward (e) 0 m/s

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