Is a weight lifter lifting weights converting his work into kinetic energy?
If a hand is swinging a string with a ball attached to the end, is the string doing work on the ball?
Is the work done by a mountain climber’s weight force (weight x distance he climbed along the slope)?
Is a bullet going in the negative x coordinate direction -1/2mv^2 and a bullet going in the positive x coordinate direction +1/2mv^2 ?
Tip and Trik
Not sure about the first one because it could be considered kinetic energy because the weights are moving, but potential energy makes more since
yes the string has tension(force) upon on it which keeps the ball from flying away
yes, its force times distance, there would be both in the x and y direction
i don’t understand the last question but if its the same bullet they have no kinetic energy