Two meteoroids are heading for earth. their speeds as they cross the moon's orbit are 2.0 km/s. the first meteoroid is heading straight for earth. what is its speed of impact? . the second misses the earth by 5000 km. what is its speed at its closest point? using similar agrument, e at moon's orbit = (1/2)mv2 - gmm/r = e atthe closest point = (1/2)mv22 -gmm/(r1+r)

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

What determines the amount of inertia an object has

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter