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A 10 kg medicine ball is thrown at a 40 kg ice-skater at rest. If the...

A 10 kg medicine ball is thrown at a 40 kg ice-skater at rest. If the ball’s speed is 5 m/s, what is the total momentum of the combination of the ball and the skater right after she catches the ball and holds on to it?

a.

15 kgm/s
b.

10 kgm/s
c.

50 kgm/s
d.

40 kgm/s
e.

None of these

How fast would the ice-skater of the previous question move after catching the ball ?

a.

5 m/s
b.

1 m/s
c.

10 m/s
d.

2 m/s
e.

None of these
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Answer #1

Since total momentum will remain conserved.

Initial momentum = final momentum

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