Question

An electric car can accelerate from rest to 96.5 km/h (this is often called “from 0 to 60” measured in miles per hour) in 2.4 s. Find the power of the car, given its mass of 1961 kg

Answer 1

We can start by finding the acceleration of the car:a = Δv/Δt = (96.5 km/h)/(2.4 s) = 40.21 m/s^2

Next, we can find the force required to accelerate the car:F = ma = (1961 kg)(40.21 m/s^2) = 78914.81 N

Finally, we can find the power of the car:P = Fv = (78914.81 N)(96.5 km/h) = 2.84 x 10^6 W

Therefore, the power of the car is approximately 2.84 megawatts.