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You are going 30 m/s in a car of mass 1000 kg when you reach a red light and stop your car.

A. How much heat energy is released by the breaks of your car

B. If your car could recapture 40% of the heat energy released from your brakes how much energy would you recapture

C. Imagine You have an electric heart and all of the recaptured energy is put back into the battery the power is your car what speed could your car achieve from rest by using only recapture energy from part B

D. If you break from the speed in part C and start again from rest how fast will you be able to drive

E. An advertisement says that if you have regenerative brakes like these you’ll never have to put any more energy into your car again. Is this true or false explain

Respuesta :

Answer: 450,000 m/s (this is for part a only since I don’t know the rest of it)

Explanation: Since you’re solving for kinetic energy, you would use the equation KE = 1/2mv^2.

KE = 1/2 (1,000 kg)(30 m/s)^2

KE = 1/2 (1,000 kg)(900 m/s)

KE = 1/2 (900,000)

KE = 1 * 900,000

KE = 900,000/2

KE = 450,000 m/s

Hope this helps! Sorry that I couldn’t help solve the rest.

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