Which of the following statements is wrong ?

Question

Which of the following statements is wrong ? (A)  KE of a body is independent of the direction of motion (B) In an elastic collision of two bodies, the momentum and energy of each body is conserved (C) If two protons are brought towards each other, the PE of the system decreases (D) A body can not have energy without momentum

Tardigrade Admin · Accepted Answer

If momentum is zero ie, if p=0, then kinetic energy K=p2 / 2 m=0 But potential energy can not be zero thus a body can have energy without momentum.

Q. Which of the following statements is wrong ?

$K E$ of a body is independent of the direction of motion

In an elastic collision of two bodies, the momentum and energy of each body is conserved

If two protons are brought towards each other, the $PE$ of the system decreases

A body can not have energy without momentum

If momentum is zero ie, if $p = 0$ ,
then kinetic energy $K = p^{2} /2 m = 0$
But potential energy can not be zero thus a body can have energy without momentum.

Q. Which of the following statements is wrong ?

KE of a body is independent of the direction of motion

In an elastic collision of two bodies, the momentum and energy of each body is conserved

If two protons are brought towards each other, the PE of the system decreases

A body can not have energy without momentum

If momentum is zero ie, if p=0, then kinetic energy K=p2/2m=0 But potential energy can not be zero thus a body can have energy without momentum.

$K E$ of a body is independent of the direction of motion

If two protons are brought towards each other, the $PE$ of the system decreases

If momentum is zero ie, if $p = 0$ ,
then kinetic energy $K = p^{2} /2 m = 0$
But potential energy can not be zero thus a body can have energy without momentum.