Question

A particle moves along the path $ABCA$ with a constant speed starting from $A$. Part $BC$ is circular with centre at $A$. The magnitude of displacement (from $A$) versus time graph will be

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

From $A$ to $B$, magnitude of displacement is increasing linearly with time as path is straight line. Linear means the graph will be a straight line. From $B$ to $C$, magnitude of displacement with respect to $A$ remains constant as path is circular and radius does not changes. From $C$ to $A$, magnitude of displacement decreases linearly with time.