Answer: 51841.5 Watts
Explanation: Using the kinematic equation for the final velocity for a constant acceleration we have:
Vf=Vi+a*t
replacing the values the results is
a=(Vf-Vi)/t= (30.55 m/s-19.44 m/s)/5s= 2.22 m/s^2
Remenber that to convert the speed in Km/h to m/s we have to multiplier by the factor 0.277.
Finally to calculate the increment of power get the final velocity we have to use Neton second law to determine the Force applied to the car.
F=m* a=2100 Kg* 2.22 m/s^2= 4666.2 N
Then increment power to accelerate is given by:
ΔPower= Force* Δ velocity= 4666.2 N* 11,11 m/s= 51841.5 Watts
