A football kick returner catches the ball just as a player from the opposing team dives to tackle him. At the time of impact, the returner’s momentum is 0 kg-m/s, and the diving player’s momentum is 130 kg-m/s. What will the magnitude of the total momentum be just after the collision?(1 point)

Responses

260 kg-m/s
260 kg-m/s

65 kg-m/s
65 kg-m/s

0 kg-m/s
0 kg-m/s

130 kg-m/s

1 answer

The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces are acting on it.

In this case, we calculate the total momentum before the collision. The returner has a momentum of \(0 , \text{kg-m/s}\) and the diving player's momentum is \(130 , \text{kg-m/s}\).

To find the total momentum before the collision: \[ \text{Total momentum before} = \text{momentum of returner} + \text{momentum of diving player} = 0 , \text{kg-m/s} + 130 , \text{kg-m/s} = 130 , \text{kg-m/s} \]

According to the conservation of momentum, the total momentum just after the collision will be the same as before the collision:

\[ \text{Total momentum after} = 130 , \text{kg-m/s} \]

Therefore, the magnitude of the total momentum just after the collision is \(130 , \text{kg-m/s}\).

The correct response is: 130 kg-m/s