Q. A car is moving with a speed of $100\ kmh^{- 1}$. If the mass of the car is 950 kg, then its kinetic energy is
A) 0.367 $M$ J
B) 3.67 J
C) 3.67 $M$ J
D) 367 J
Explanation
(a) Kinetic energy, $= \frac{1}{2} \times 950 \times \left( 100 \times \frac{5}{18} \right)^{2}\ J$
$= 0.3665 \times 10^{6}$ J = 0.367 MJ
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.