NDA 2024 Physics question

PhysicsLaws of MotionNDA 2024

A block of mass 2 kg, moving with the initial speed of 3 m/s comes to rest on a rough horizontal surface after travelling a distance of 3 m. The magnitude of the frictional force is :

Answer: (B)

Solution

Work done by friction = loss of kinetic energy: , so .

Question ID VK-032723