Question

2. A moving car suddenly comes to a rest after applying brakes. branch of physics do you think is appropriate to explain this phenomenon?
(a) Mechanics
(b) Acoustics
(c) Electromagnetism
(d) Nuclear physics
(e) None of the above

Answer 1

(a) Mechanics.

Braking is explained by mechanics (dynamics and friction): the brake applies a frictional force that produces a deceleration (by Newton's second law) and converts the car's kinetic energy into heat (work done against friction).