Author Topic: physics!!!!!!!!!!!!!!!!!!!!!!!  (Read 3513 times)

Offline astarmathsandphysics

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Re: physics!!!!!!!!!!!!!!!!!!!!!!!
« Reply #15 on: March 17, 2010, 12:04:22 am »
1st thing in morning

Offline astarmathsandphysics

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Re: physics!!!!!!!!!!!!!!!!!!!!!!!
« Reply #16 on: March 17, 2010, 10:02:50 am »
1) double the weight so double the extension. Remover 1/3 of the springs so times the extension by 3/2 c
2. mass of all the atoms in unit volume is mass of each atoms * number of atoms in unit volume
3. The densities are approxsimately the same
4. Because F=ma  - the soft ball decelerates more slowly so a is smaller and F is smaller