Recent content by nilfound

I am referring to calculating sums and products in problems in physics, ranging from kinematics to electromagnetism and onwards, where you have to calculate quantities with the given derived equations. For instance, if on an exam you need to calculate the paths of motion of an object, how to...

I have been struggling with being able to mentally calculate math problems for quite a long time. I am worried I will fall behind if I don't master this skill. How important is it to have a firm grasp on this skill if I am choosing to pursue a career in physics?

For energy it will be the same of course! But the velocities will vary will they not? But then if the velocity varies, then Ek changes, because Ek = 1/2mv^2!

Because there are two heights: the starting height at the top of the cliff, and the ending height at the bottom. I am just confused on how to calculate how they will be different or the same!

But when they hit the ground, the angle they were thrown at will have a significant difference in their speed as gravity grabs hold right? So won't the first ball, in the extreme case of gained height, have a greater final velocity and kinetic energy? Or am I missing a fundamental part of energy...

I am really quite in love with the science of physics and am attempting to up my skills substantially. Of course, pursuing physics is very hard, but practice makes perfect! I so far have covered Kinematics, Light and Waves, Work and Energy, and have done much personal research into theories and...

Homework Statement Four identical balls are thrown from the top of a cliff, each with the same speed. The first is thrown straight up, the second is thrown at 30° above the horizontal, the third at 30° below he horizontal, and the fourth straight down. How do the speeds and kinetic energies of...