2010年12月29日 · In summary, the question asks why an egg dropped on the road breaks while an egg dropped on grass does not break. The correct answer is that the time interval for stopping is greater for the egg on grass, as the grass slows it down before it hits the ground. This is because change in momentum is force, and force is mg for both situations. Eliminating options …

2012年11月11日 · In summary: Falling objects are a fairly complex topic and not amenable to simple answers. There are certainly some simple answers to simple questions (eg. "how long does it take for a dropped egg to fall?") but yours is not a simple question. In summary, the egg of mass 59g breaks from a height of approximately 0.35m due to the impact force exerted on it. …

2018年2月20日 · Homework Statement So I've spent many hours on here and deep deeeeeep in my textbooks trying to learn things...that pertain to the Egg drop experiment I am almost done with everything I need but I was wondering. I've read that it takes approximately 25 …

2009年12月4日 · The minimum energy required to break apart a molecule varies depending on the type of molecule and its bonding strength. However, in general, an input of energy equal to or greater than the bond energy is needed to break apart a molecule.

2009年9月10日 · The falling object hits the ground and does work to break molecular bonds, for example, to cause a clump of hardened mud to crack, or overcome the static friction of sand particles in a pile. The falling object loses its kinetic energy as it does this mechanical work. The object comes to rest, and the surface that it fell onto is slighly altered.

2007年10月22日 · Homework Statement A 120 g ball on a 60 cm long string is swung in a vertical circle about a point 200 cm above the floor. The string suddenly breaks when it is parallel to the ground and the ball is moving upward. The ball reaches a height of 650 cm above the floor. What was the tension in...

2010年6月25日 · The moment it hits the concrete, the concrete starts to break up and the hammer moves a little further before completely stopping. You could try to measure how much the hammer typically moves after hitting the concrete and estimate the average force from that. Most of the force will actually be exerted on the ground. If you suspend the slabs of concrete between two …

2010年9月15日 · (a) To find the maximum height above the break-free point, we can use the kinematic equation y-y0=v0t+1/2at^2, where y is the maximum height, y0 is the break-free point, v0 is the initial velocity (in this case, 0 m/s), a is the acceleration (in this case, -9.8 m/s^2), and t is the time it takes for the package to reach the ground.

2014年3月30日 · Another possible way to locate a break would be to measure the capacitance between the line and ground - from each end. You could expect something like 60pF per metre but you wouldn't need to know that if you could measure from each end. The ratio of capacitances would give the ratio of distances between the ends and the break.

2022年4月4日 · Ignore air resistance. [a.] Where on the ground (relative to the position of the helicopter when she drops) should the stunt woman have placed the foam mats that break her fall? well so far... but not sure so later [b.] Draw x-t, y-t, v ft, and v y-t graphs of the motion