Currently Being Moderated

### Jul 14, 2009 12:00 AM

Problem 1

a person stands on a platform 10 meters high, and throws an object at 14 m/s at 45 degrees.

1. how high did the object go?

2. how long did it travel in the air?

3. how far did it travel?

Problem 2

disk A has a moment of inertia of 6

disk B has moment of inertia of 1.5

angular velocity of disk A is 1.0

1. find the angular velocity of both disk together

2. find kinetic energy of A and B separately

3. what difference cause changes in kinetic energy and angular velocity