The Brainliest Answer!

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
 IN cars,a functional rear spoiler gives downforce on the rear tires, which causes for better friction between the tires and the road, and Friction Force = Normal Force * coefficient of friction.  Increasing downforce on the rear of a car is effectively increasing the normal force, and getting better tires is effectively increasing coefficient of friction.  Both of these modifications give better friction, which gives better performance.These can be applied to a car only in case of car services.
2 4 2
im frm chennai
tq br coosing me bst
  • Brainly User
She might have asked to roughen the tyres so as to increase the friction so the braking ability stays good.
And she must have, you know, asked to smoothen the surfaces of cylinder and piston ( by lubrication ) so that the engine doesn't heat up and lasts longer.
1 3 1