MCQ Collection
NAT MCQs
Practice NAT questions with answers and explanations.
Choose an option to check your answer.
Correct Answer: C. Net work equals change in kinetic energy
Explanation:
The net work on an object changes its kinetic energy.
This relation is valid for the total work of all forces.
Choose an option to check your answer.
Correct Answer: D. When only conservative forces do work
Explanation:
Conservative forces transfer energy between kinetic and potential forms.
Nonconservative work changes total mechanical energy.
Choose an option to check your answer.
Correct Answer: A. A force whose work depends only on initial and final positions
Explanation:
For conservative forces, work around a closed path is zero.
Gravity and ideal spring force are examples.
Choose an option to check your answer.
Correct Answer: B. Mass multiplied by velocity
Explanation:
Linear momentum is a vector quantity p=mv.
Its direction is the direction of velocity.
Choose an option to check your answer.
Correct Answer: C. Change in momentum
Explanation:
Impulse equals force integrated over time.
For constant force, J=FΔt=Δp.
Choose an option to check your answer.
Correct Answer: D. 30 N
Explanation:
Opposing forces subtract.
Net force = 50-20 = 30 N.
Choose an option to check your answer.
Correct Answer: D. When net external impulse is zero
Explanation:
Internal forces cancel in pairs within a system.
With no net external impulse, total momentum remains constant.
Choose an option to check your answer.
Correct Answer: A. 3 m/s²
Explanation:
Use a=F/m.
A=12/4 = 3 m/s².
Choose an option to check your answer.
Correct Answer: A. A collision conserving both momentum and kinetic energy
Explanation:
All isolated collisions conserve momentum.
Elastic collisions also conserve total kinetic energy.
Choose an option to check your answer.
Correct Answer: B. 18 N
Explanation:
Centripetal force is mv²/r.
F=2×36/4 = 18 N.
Choose an option to check your answer.
Correct Answer: B. A collision in which objects stick together
Explanation:
The objects share a common final velocity.
Momentum is conserved, but kinetic energy is not.
Choose an option to check your answer.
Correct Answer: C. 5 m/s²
Explanation:
Centripetal acceleration is v²/r.
A=100/20 = 5 m/s².
