# My Electric Car (new, original title for an extra point) by Your Name 11/19/2010 (1pt for date) IPC Mr. Thomas Period (1 pt)

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My Electric Car (new, original title for an extra point) by Your Name 11/19/2010 (1pt for date) IPC Mr. Thomas Period (1 pt)

wiki.rockwallisd.org/groups/davidtho mas Name your car in the title above Give make(3 pts), model(2 pts) and year(1 pt) Put a picture of it on this slide(5 pts)

Determine your motors Do you want AC motors (the best) or DC motors (the least expensive)? (2 pts) How many horsepower? (3 pts) You will need the curb weight (2 pts) You need 6-8 HP per thousand pounds. Use Google converter to find out how many kiloWatts will this equal?(3 pts)

How much Voltage do you need? How many volts would your motors need to produce the power you calculated in the last slide? (10 pts) On the formula chart P=V*I. Assume 60 Amps for current (I) So V=P/60 Amps Plug in your value for P (in Watts, not kiloWatts) and solve for V (in Volts)

How many batteries do you need? How many 12 V batteries would you need to get the voltage you just calculated?(10 pts) Divide your voltage by 12.

How heavy are your batteries? Assuming a typical car battery weighs 40 pounds, how much will your batteries weigh?(4 pts) How much mass will they have if a kg weighs about 2.2 pounds? In other words, each battery has a mass of about 18 kg.(6 pts)

Find the final mass. Add your curb weight and your battery weight and divide by 2.2 pound/kg to find the total mass of your vehicle. (10 pts) This will be the total mass of your vehicle (approximately) after installing batteries.

How fast could you go? Actually, calculate your acceleration, ignoring air resistance and friction. (10 pts) W= E = ½ m v 2 60 mph = 27 m/s. use this for v (v 2 =729) Use your total mass for m Solve for W Time = Work / Power (in Watts) 27 m/s divided by t = acceleration

How far could you go? How far (theoretically) would you be able to go on fully charged batteries? (10 pts) Assume the batteries have about 1200 volt- hours of life each divide 1200 Volt-hours by your voltage Answer will be in hours If your answer is ridiculously small, multiply by 60 to see how many minutes If still too small multiply by 60 again to see how many seconds your charge will last

How much would it cost? Look up the cost of your motors (4 pts) Add to that the cost of your batteries if we can get them discounted at about \$25 each (3 pts) Add another \$1000 for wiring, a charging system and other parts. (3 pts) This will be the total cost of your conversion

Would you ever do this? Consider the cost, the performance, the work and the savings in gas costs, would you consider taking on a project like this?(10 pts)

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