Physics!

The first thing I find striking about Physics is how convenient it is. We all know how you can drop a watermelon and a ping-pong ball and they will hit the ground at the same time. Well today's homework has an extra-credit question about a marble rolling down a slope and a cube sliding down the same slope. It is amazing how closely tied rotational motion and translational motion were. As it was it the mass, the velocities, the height of the slope, the slope of the slope, the radius of the marble, the radius of the cube, etc. were all irrelevant. The ratio of the velocities at the bottom of the ramp as long as they were dropped from rest at the same height would never vary.

The second thing I find striking about Physics is how inconvenient it is. You can't use it for any practical purpose. Sure I could find the force exerted on the keyboard by my fingers, but would it really matter? The force exerted by a basketball on a court? Even if I knew how much force I had to put behind a basketball to make it arc with the proper displacement and angle into the net, would my mind even know what I was saying? Push the ball at 150 N at an angle 36.5 degrees above the lateral. Useless!

Easy to solve, impossible to use: Physics!