Motion in a Plane — Physics STD 11 Science — Question
Maharashtra BoardEnglish MediumSTD 11 SciencePhysicsMotion in a Plane4 Marks
MCQ
Explain the term: Displacement.
D
Then, the displacement $\vec{S}$ in the time
✓
Answer
Displacement:
Displacement of a particle for a time interval is the difference between the position vectors of the object in that time interval.
Let $\overrightarrow{x_1}$ and $\overrightarrow{x_2}$ be the position vectors of a particle at time $t_1$ and $t_2$ respectively. Then the displacement $\overrightarrow{ S }$ in time interval $\Delta t=t_2-t_1$ is given by $\overrightarrow{S}=\Delta \overrightarrow{x}=\overrightarrow{x}_2-\overrightarrow{x}_1$
Dimensions of displacement are equal to that of length i.e.. $[L^1M^0T^0].$
Displacement is a vector quantity.
Example:
For an object has travelled through $1m$ from time $t_1$ to $t_2$ along the positive $X-$direction, the magnitude of its displacement is $I \ m$ and its direction is along the positive $X-$axis.
On the other hand, for an object has travelled through $I \ m$ from time $t_1$ to $t_1$ along the positive $Y-$direction, the magnitude of its displacement remains same i.e., $I\ m$ but the direction of the displacement is along the positive $Y-$axis.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.