A 1.2 kg skateboard is coasting along the pavement at a speed of 5m/s when a .8kg cat drops from a tree?

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A 1.2 kg skateboard is coasting along the pavement at a speed of 5m/s when a .8kg cat drops from a tree?

If the cat lands on the skateboard what is the speed of the skateboard-cat combination?

2006-11-28 08:18:14 · 1 answers · asked by Kayla H 1 in Science & Mathematics ➔ Physics

1 answers

Horizontal momentum is conserved.

Initial horizontal momentum is the cats (0) + the skateboard's (1.2 kg * 5.0 m/sec) = 6 m-kg/sec

final horizontal momentum is 2.0 kg * s, where s is the speed of the athletic cat.

2s = 6

Speed s = 3.0 meters/sec

2006-11-28 08:28:30 · answer #1 · answered by heartsensei 4 · 0⤊ 0⤋