Exams › NEET › Physics

The momentum along the x-axis remains unchanged. Which of the following is correct?

1. Momentum changed only in vertical direction or y-axis.
2. ΔP = ΔP_vertical
3. P_final = P_initial = mv cos θ
4. Resultant change in momentum = √2mv

Correct answer: P_final = P_initial = mv cos θ

Solution

If the momentum along the x-axis remains unchanged, it implies that the horizontal component of momentum is constant. This matches the condition described in option C, where the momentum along the x-axis is given as mv cos θ.

Related NEET Physics questions

• Conservation of momentum in a collision between particles can be understood from
• Assertion (A): According to Newton's third law sum of action and reaction is not equal to zero Reason (R) : The forces action and reaction acts on different bodies.
• Who proposed the concept of Inertia?
• Which of the following Newton's law(s) is/are not applicable in non-inertial reference frame.
• Assertion When a bus starts suddenly, a person standing in it falls backwards. Reason It is due to inertia of rest.
• A body of mass M hits normally a rigid wall with velocity V and bounces back with the same velocity. The impulse experienced by the body is:

⚔️ Practice NEET Physics free + battle 1v1 →