5. Classify the following as elastic or inelastic collisions: (2 pts) a. A pool ball collides with the 8 ball sending it into the corner pocket:
b. A bullet collides with the target lodging itself in the wood:
C. A bowling ball strikes the pin and knocks it backward into another pin:
d. Fred jumps on Eric's back and they fall to the ground:

In a particular chemical reaction, the energy of the reactants is 30 kj and the energy of the products is 5 kj. 
 the maximum energy of the system is 40 kj. sketch a potential energy diagram for this reaction. make sure to label the energy of the reactants, the energy of the products, the activation energy, and the enthalpy change for the reaction.