Question

A car starts from rest from origin $O$ and continues to move till point $C$ as shown in the graph. Select the correct statement about the motion of car as shown in the graph.

• A. Part $A B$ represents uniform motion
• B. At instant time $t=t_{2}$, brakes must have been applied
• C. The car stops at $t=t_{3}$
• D. All of the above

Answer 1

Answer: (D)

Here, $A B$ represents uniform motion of a car as $x-t$ graph from $t_{1}$ to $t_{2}$ varies linearly.
At $t=t_{2}$ brakes must have been applied such that it stops at $t=t_{3}$.
After which the $x-t$ graph becomes parallel to time axis. Thus, all given statements are correct.