How many times more effective is aerobic respiration compare to anaerobic respiration?

Aperson travels 35 km in 0.4hrs, followed by 53 km in 0.6 hr. what is the average speed

This is a type pf behavior that animals are born with and them to survive

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.