A particle starts from rest and moves with constant acceleration. The distance covered in the first 3 seconds is 9 m. The acceleration is MCQ with Answer and Explanation

A particle starts from rest and moves with constant acceleration. The distance covered in the first 3 seconds is 9 m. The acceleration is
A. 4 m/s²
B. 3 m/s²
C. 2 m/s²
D. 1 m/s²
Answer: Option C
Solution (By JKExamLibrary)
s = ut + ½at², u=0 => 9 = ½a(3)² => 9 = ½a×9 => a = 2 m/s².

This question belongs to: Science Physics

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Physics Questions

Question #1 Report Error
Which of the following particles has the largest penetrating power?
A. Alpha particles
B. Protons
C. Gamma rays
D. Beta particles

Correct Answer: Option C


Explanation:
Gamma rays (photons) have highest penetration, stopped by thick lead/concrete. Alpha least (paper/skin). Beta intermediate (aluminium). Neutrons also penetrating but not listed. Gamma has no charge.

This question belongs to: Science Physics
Question #2 Report Error
Which scientist formulated the laws of electromagnetic induction?
A. Maxwell
B. Oersted
C. Faraday
D. Ampere

Correct Answer: Option C


Explanation:
Michael Faraday discovered electromagnetic induction (1831). Oersted found magnetic effect of current.

This question belongs to: Science Physics
Question #3 Report Error
Momentum is conserved in
A. No collisions
B. Only elastic collisions
C. Only inelastic collisions
D. All collisions

Correct Answer: Option D


Explanation:
Momentum conserved in all collisions if no external force. KE conserved only in elastic.

This question belongs to: Science Physics