Question
Physics Question on Friction
A bullet of mass 0.1 kg moving horizontally with speed 400 ms-1 hits a wooden block of mass 3.9 kg kept on a horizontal rough surface. The bullet gets embedded into the block and moves 20m before coming to rest. The coefficient of friction between the block and the surface is ______.
(Given g = 10 m/s²)
A
0.25
B
0.50
C
0.65
D
0.90
Answer
0.25
Explanation
Solution
The correct option is(A): 0.25