What is the kinetic energy (in J) of a body moving at ?

Answer and explanation

Correct answer: C. 10

  1. Step 1: The kinetic energy of a body in translational motion is given by .
  2. Step 2: Substitute mass and velocity : .
  3. Step 3: Evaluating the expression gives .
Answer
10.
Why not the others: 20 computes without the factor of ; 40 doubles ; 5 halves the correct kinetic energy.

Practise more Work, energy and power.

Free questions with an explanation for every one, and full timed NEET UG mock tests.

All Work, energy and power questionsTake a mock test

More Work, energy and power questions