8. On Earth, a ball is dropped and falls 2.0 m in a vacuum. The acceleration of the ball at 1.0 m from the point the fall s 10 m/s^2. What is the
acceleration of the ball at 0.5 m?
0 10 m/s^2
O 5.0 m/s^2
020 m/s^2
0 15 m / s^2

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

The pressure increases by 1.0 x 104 n/m^2 for every meter of depth beneath the surface of the ocean. at what depth does the volume of a pyrex (bulk modulus 2.6 x 1010n/m^2) glass cube, 9.8 x 10^−2m on an edge at the ocean's surface, decrease by 7.5 x 10−10m^3? explain the formula beyond this point: p=1.0x10^4, b=2.6x10^10, l=9.8x10^−2, delta v=7.5x10^−10. at some point l needs to be cubed. why p is divided by delta v?

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.