NEETPhysicsWork, Power and Energy
A particle moves in one dimension from rest under the influence of a force that varies with the distance traveled by the particle as shown in the figure. The kinetic energy of the particle after it has traveled 3 m is:
Options
- A4 J
- B2.5 J
- C6.5 J
- D5 J
Correct answer
C. 6.5 J
Step-by-step solution
Change in K.E. = Work done = Area Area = ( 3 × 2 ) + ( 1 2 × 1 × 1 ) = 6.5 ∴ Change in kinetic energy = 6.5 J