Chapter 3: Problem 32
\(\mathrm{A} \rightarrow \mathrm{f} \quad\) Spinning top rotates about its own axis. \(\mathrm{B} \rightarrow \mathrm{g} \quad\) Coin moves in a straight path over a carrom board. \(\mathrm{C} \rightarrow \mathrm{a} \quad\) A vehicle moving on a fly-over bridge undergoes curvilinear motion. \(\mathrm{D} \rightarrow \mathrm{e} \quad\) We know, a \(=\frac{\mathrm{v}-\mathrm{u}}{\mathrm{t}} \Rightarrow \mathrm{t}=\frac{\mathrm{v}-\mathrm{u}}{\mathrm{a}}\) \(\mathrm{E} \rightarrow \mathrm{c} \quad\) Distance-time graph of a body moving with constant speed is a straight line. \(\mathrm{F} \rightarrow \mathrm{b} \quad\) One oscillation means one to-and-for motion of a body. \(\mathrm{G} \rightarrow \mathrm{d} \quad\) The length of a seconds pendulum is \(100 \mathrm{~cm}\) (or) \(1 \mathrm{~m} .\)