A1500-kg car locks its brakes and skids to a stop on a slippery horizontal road, leaving skid marks that are 15 m long. how much mechanical energy was dissipated as this happened? the coefficient of kinetic friction between the tires and the road is 400.40un.

Explanation:

Given:

So, the energy dissipated during the skidding of car:

Frictional force:

where N = normal reaction by ground on the car

Now from the work-energy equivalence:

is the dissipated energy.

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

the components of a vector are the parts of the vectors that are to each other.

b perpendicular