Aspeed time graph shows a car moving at 10 m/s for 10 s. the car's speed constantly decreases until it comes to a stop at 30 s. what describes the slope of the graph from 10 s to 30 s?

beta decay is the answer

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.