Not your usual #science #blog

Had a spirited debate about the drive time of the Tesla Model S.

Force needed to accelerate a Model S from 0 to the maximum speed of 190 km/h (120 mph) = 9272 N

Energy needed for this acceleration = 2.9364 x 10^6 J

drag force on Model S for cruising at the maximum speed = 1134 N or 255 lbs.

power needed to maintain maximum speed cruising = 59.85 kW

1.02% of not entirely full battery capacity used in maximum acceleration from dead start

Take 1 acceleration from 0 and cruising at maximum speed. Drive time = 80 minutes

or cruise at 100 mph, 161 km/h, or 44.7 m/s. Drive time = 2.2 hrs.

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