Question

A 115 kg football player runs with a velocity of 4.6 m/s north and collides with...

A 115 kg football player runs with a velocity of 4.6 m/s north and collides with a second 135 kg football player running south. Following the collision the two players are both moving south at 0.75 m/s. What was the speed of the second football player initially?

Report the value in m/s rounded to the nearest tenth.

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Answer #1

Here no external force is acting on the system, so momentum conservation can be applied.

By appying momentum conservation and solving, we can find the speed of the second player before collision.

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