2010年12月29日 · an egg dropped on the road breaks, while the egg that is dropped on grass doesn't break...why? a. the change in momentum is greater b. change in momentum is less c. the time interval for stopping is greater d. time interval for stopping is less Homework Equations there are no equations... The Attempt at a Solution

2012年11月11日 · Usually an object hitting the ground does not entirely stop falling - a rigid object, for eg, will make a small hole in the ground. In which case we can take an approximation by making ##d##=depth of the hole then ##F_{impact}=mgh/d## is just conservation of energy.

2018年2月20日 · Break Egg Experiment Forces Newtons In summary: If short of time use the value for time you measured. Otherwise perhaps look at the other equations of motion or SUVAT equation to calculate the time.

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.

2009年12月4日 · The graph below shows all of the quantized energies (bound states) for one of these molecules. For this molecule, E0 = -2.5 eV, E1 = -1.20 eV, E2 = -0.72 eV, and E3 = -0.30 eV. What is the minimum amount of energy required to break a molecule apart, if it is initially in the ground state?

2007年10月22日 · 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 the string an instant before it broke? Homework Equations Vf^2-Vi^2=2aS

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.

2010年9月15日 · The vertical velocity of the package was given in a graph and using kinematic equations, it was determined that the package reached a maximum height of 19.6 m above the break-free point and the break-free point was 6.0 s above the ground. At t = 4 s, the package was at its maximum height and had an instantaneous velocity of zero.

2013年6月25日 · 1. calculate his break shot speed 2. at what speed did his pool ball hit the ground? Homework Equations speed=distance/time m/s The Attempt at a Solution givens are 32mph, and the distance which is 3.65m... the height(im not even really sure if this relates to the problem) is 0.710m. I am not sure what the 0m has to do with this either.

2022年4月4日 · A movie stunt woman drops from a helicopter that is 30.0 m above the ground and moving with a constant velocity whose components are 10.0 m/s upward and 15.0 m/s horizontal and toward the south. Ignore air resistance. [a.]