Comment by The constellation g** slayer on Ethan Elliot

@Ethan Elliot you see that's where you're wrong if your weight is halved and the amount of force you can exert with your legs remain the same you will burn less energy while moving and your speed will double do the math Let's say you can constantly exert 3800 newtons of force per stride and you weigh 75kg your acceleration is 185/75 = 2.47 m/s² But at half the weight 185/37.5 = 4.94 m/s² Taking 100m as the relative distance for measurement S= ut + 1/2at² At full weight: 100 = 2.47/2 x t² t = 9.02 secs At half weight 100 = 4.94/2 x t² t = 6.36 secs Calculate speed Full weight speed = 11.09m/s Half weight speed = 15.73m/s Full weight time = 9.02 secs Half weight time = 6.36 secs Full weight acceleration = 2.47 m/s² Half weight acceleration = 4.94 m/s² So you are wrongggggg!!!