Acar with a mass of 1,324 kilograms, traveling at a speed of 20 meters/second, crashes into a wall and stops. what is the kinetic energy after this perfectly inelastic collision?
a. 0.0 joules
b. 3.2 × 103 joules
c. 1.0 × 104 joules
d. 1.3 × 104 joules

A. 0.0 joules

Explanation:

We can calculate the initial kinetic energy of the car, which is given by:

where m is the mass of the car and v its initial speed. After the collision, the car stops, so its final speed is zero. Therefore, the new kinetic energy of the car will be

This type of collision is called 'perfectly inelastic collision', and it occurs when there is the maximum loss of kinetic energy, as in this case. Therefore, the correct answer is

A. 0.0 joules

a. spokes of a wheel.

as indicated in the question radial contains rad, also found in radius, so the fracture's would span the radius.