Answer:
Explanation:
Let's start by stating that the work done here would be determined by taking into account the following:
-External forces
-Change in kinetic energy
Work Energy theorem is fully going to guide the solution to this problem.
Let's go now:
Mass of car = 1475kg
Velocity of car= 66.5km/h
Velocity = 66.5km/h * 0.278
V = 18.472 m/s
Kinetic Energy (K.E) = 1/2(mv^2)
K.E = 0.5 * 1475 * 18.472^2
K.E = 737.5 * 341.214
K.E = 251645.90 kgm^2/s^2
1kgm^2/s^2 = 1 Joule
So therefore,
K.E = 251645.90 Joules
K.E = 60.144KCals
