Per NCERT, an object with mass 2 kg moving at 10 m/s has what KINETIC ENERGY?
A10 J
B20 J
C100 J (= ½ × 2 × 10²)
D200 J
Answer & Solution
Correct answer: C. 100 J (= ½ × 2 × 10²)
Per NCERT, KE = ½ × 2 × (10)² = ½ × 2 × 100 = 100 J. The other answers misapply the formula.
Related questions
A crate dragged across a rough floor loses mechanical energy because friction is:Conservation of mechanical energy is the form the work-energy theorem takes when the forceCalculating work for a conservative force is easier than for a complicated path because itA force acting entirely perpendicular to an object's displacement does how much work?Mechanical energy transferred into or out of a system equals the work done by an external Winding up a toy or an old-fashioned watch stores energy by doing work against its:Which three energy examples are named together?The kinetic energy in the work-energy theorem is specifically the translational kinetic en