What happens to your fuel efficiency when you drive with constant braking and accelerating?

Fuel efficiency drops

Explanation:

Aggressive braking reduces the car’s speed drastically than necessary (even to a halt) hence requiring more gas when accelerating back to the required speed. Gentle braking saves on the forward  momentum of the car when immediately required to accelerate back again to normal speed. This bad driving technique can reduce fuel efficiency by 10 – 40 %.

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.