a 3 gk steel ball strikes a massive wall in x direction at 5 m/s at an angle of

Question

a 3 gk steel ball strikes a massive wall in x direction at 5 m/s at an angle of 90 with the plane of the wall. It bounces off the wall with the same speed and angle What is the change of momentum for the ball due to the impulse from the wall? a- 15 i b- 0 i c- 30 i d- 15 j e- 30 j Please explain the right answer a 3 gk steel ball strikes a massive wall in x direction at 5 m/s at an angle of 90 with the plane of the wall. It bounces off the wall with the same speed and angle What is the change of momentum for the ball due to the impulse from the wall? a- 15 i b- 0 i c- 30 i d- 15 j e- 30 j Please explain the right answer What is the change of momentum for the ball due to the impulse from the wall? a- 15 i b- 0 i c- 30 i d- 15 j e- 30 j Please explain the right answer

Explanation / Answer

The initial momentum of the ball is pi = 3 * 5 = 15 i

The final momentum of the ball is pf =- 3 * 5 = -15 i

The change in momentum is pf - pi = -15 i - 15 i = -30 i

correct option is c

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