NEETPhysicsWork, Power and Energy
Assertion : In projectile motion, the rate of change in magnitude of potential energy of a particle first decreases and then increases during motion. Reason: In projectile motion, the rate of change in linear momentum of a particle remains constant during motion.
Options
- AIf both Assertion and Reason are correct and Reason is the correct explanation of Assertion
- BIf both Assertion and Reason are true but Reason is not the correct explanation of Assertion
- CIf Assertion is true but Reason is false
- DIf Assertion is false but Reason is true
Correct answer
B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
Step-by-step solution
Assertion ( aligned d U d t & = d d t (m g h)=m g d d t (u_y t- 1 2 g t^2 ) & =m g (u_y-g t )=m g v_y | d U d t | & =m g |v_y | aligned ) ( |v_y | ) first decreases then increase with time. Reason ( d P d t = F =m g= ) constant