12. In a ballistics test, a gun shoots a 0.206kg potato into a 4kilogram catching cart initially at rest. The potato lands in the cart and they move off together at a velocity of 95m/s.
Determine the initial velocity of the potato.

If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

Explain earth's motion, using the terms "precession" and "rotation" in your answer.