Question

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 a constant velocity of 10 meters/second. What’s the change in velocity of the coconut?

-30 m/s

-10 m/s

10 m/s

30 m/s

Answer 1

The answer would be A

Answer 2

v 1 = 20 m/s; v 2 = - 10 m/s ( opposite direction );
Change in velocity:
Δv = v 2 - v 1
Δv = - 10 m/s - 20 m/s
Δv = - 30 m/s
Answer:
The change in velocity of the flying coconut is A ) - 30 m/s