When velocity of a moving car decreases by applying sudden brake, then its kinetic energy,

Question

When velocity of a moving car decreases by applying sudden brake, then its kinetic energy, (A) increases (B) decreases (C) remains same (D) none of these

Tardigrade Admin · Accepted Answer

When velocity of car decreases, then its kinetic energy decreases because kinetic energy of car is directly proportional to the square of its velocity. i.e. K=(1/2) m v2 or K propto v2

Q. When velocity of a moving car decreases by applying sudden brake, then its kinetic energy,

increases

decreases

remains same

none of these

When velocity of car decreases, then its kinetic energy decreases because kinetic energy of car is directly proportional to the square of its velocity.
i.e. $K = \frac{1}{2} m v^{2}$
or $K \propto v^{2}$

Q. When velocity of a moving car decreases by applying sudden brake, then its kinetic energy,

increases

decreases

remains same

none of these

When velocity of car decreases, then its kinetic energy decreases because kinetic energy of car is directly proportional to the square of its velocity. i.e. K=21​mv2 or K∝v2

When velocity of car decreases, then its kinetic energy decreases because kinetic energy of car is directly proportional to the square of its velocity.
i.e. $K = \frac{1}{2} m v^{2}$
or $K \propto v^{2}$