NCERT Example 1.4 - Units and Measurements
Question: The SI unit of energy is J = kg m² s⁻²; that of speed v is m s⁻¹ and of acceleration a is m s⁻². Which of the formulae for kinetic energy (K) given below can you rule out on the basis of dimensional arguments (m stands for mass)? (a) K = m² v³ (b) K = (1/2) m v² (c) K = m a (d) K = (3/16) m v² (e) K = (1/2) m v² + m a
Answer: Formulae **(a), (c), and (e)** are ruled out on the basis of dimensional arguments.
Full step-by-step NCERT solution with diagrams on Something by Zero.