In a video game, a flying coconut moves at a constant velocity of 20 meters/second. The coconut hits an obstacle and moves in the opposite direction with the constant velocity of 10 meters/second. Wha

In a video game, a flying coconut moves at a constant velocity of 20 meters/second. The coconut hits an obstacle and moves in the opposite direction with the constant velocity of 10 meters/second. What's the change in velocity of the coconut?

A. -30 m/s

B. -10 m/s

C. 10 m/s

D. 30 m/s