I'm not going to lie, I'm not big on math. I did okay in high school and college in math classes, but I didn't pursue a science, engineering, or other technical degree. So, I'm probably
I’m not going to lie, I’m not big on math. I did okay in high school and college in math classes, but I didn’t pursue a science, engineering, or other technical degree. So, I’m probably not the person to go to if you want a deep look at the numbers behind a clean technology. But I do know who to go to when I need those numbers, and one of those people is Jason at “Engineering Explained.”
The good news? It’s likely that the Tesla Semi didn’t need a megawatt-hour pack. The efficiency is actually good enough that they could get away with only 850 kWh of battery cells, which saves Tesla a bunch of money, preserves the battery supply for other vehicles, and is generally better for the environment.
Of course, he proves this. He takes the drag coefficient of the vehicle, its weight, and every other factor he could get good numbers for, and comes up with a need for 800 kWh in a previous video. He recalculates this for 55 MPH, showing that you’d come in at only needing 740 kWh to pull off this run. This leaves plenty of room to only use 93% of an 850 kWh pack.He then goes on to ask the question of what it would take to travel at a more realistic 70 MPH.
This statement, as well as several others that he shares, don’t provide important speed context. It’s possible that the larger range estimates Pepsi has given would be for lower speeds.
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