Posted by **John** on Thursday, May 12, 2011 at 10:02pm.

I've tried a bunch, have no idea. Got the first part, no idea on the second one.

A basketball, of mass m = 0.45 kg is dropped, from rest, from a stationary hellicopter at a high altitude. Use g = 9.81 N/kg.

(a) If air resistance is negligible, using energy considerations alone, how fast should the ball be going after it falls 100 meters? 1 m/s

(b) Of couse, we cannot ignore air resistance (i.e. drag). As a result, after the ball has fallen far enough, it reaches its terminal velocity, vt = ăg/d, where d is the drag coefficient of the ball in air. If d = 0.007, how much energy has the ball lost due to air resistance after it falls 1300 meters?

## Answer this Question

## Related Questions

- Physics - Please help me with the following problem: Joe is on a cross-country ...
- physics - ok Boxes are moved on a converyor blet from where they are filled to ...
- Physics - ok Boxes are moved on a converyor blet from where they are filled to ...
- Physics - Ok I guess the reason why I do not know how to do this problem is ...
- Physics (Elastic Collision) - A 0.400 kg croquet ball makes an elastic head-on ...
- Physics - A 2.0 kg mass starts from rest and slides down an inclined plane 8.0 X...
- Physics - A 2.0 kg ball moving with a speed of 3.0 m/s hits, elastically, an ...
- Physics - A lumberjack (mass = 104 kg) is standing at rest on one end of a ...
- Related Rates - A particle moves along a path described by y=x^2. At what point ...
- Physics - Please help me with the following problem: Joe is on a cross-country ...

More Related Questions