A slingshot is accurately aimed at a dangerous criminal, disguised as a green stuffed troll, hanging from the gutter of a building. The target is well within the slingshot’s range, but the instant the pebble is launched and moves with a speed v0, the troll lets go and drops to the ground. What happens? The pebble

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.