Question

A block of mass 2 kg is given a push horizontally and then the block starts sliding over a horizontal plane. The graph shows the velocity-time graph of the motion. The coefficient of sliding friction between the plane and the block is –

• A. 0.3
• B. 0.20
• C. 0.5
• D. 0.40

Answer 1

Answer: (B)

0.20

Answer 2

From the graph, retardation of block, a = –2 m/s²

| $\overrightarrow { \mathrm { a } }$ | = mg, ̃ m = $\frac { 2 } { 10 }$ = 0.2