question_answer

The distance travelled by a body is directly proportional to time. Is any external force acting on it?

Answer:

                As\[s\propto t\] or\[s=kt\]                 \[\therefore \]  \[\upsilon =\frac{ds}{dt}=k,\]     \[a=\frac{d\upsilon }{dt}=0\] i.e., the body is moving with a uniform velocity and no external force is acting on. it.