The displacement versus time graph for a body moving in a straight line is shown in the figure. Which of the following regions represents the motion when no force is acting on the body?

What was the mistake in Aristotle's idea regarding motion?

For ordinary terrestrial experiments,the observer in an inertial frame in the following cases is

When a body is at rest or in uniform motion,no force acts on it. Is this statement true or false?

Due to which property of an object does it resist any attempt to change its state of motion?

$A$ trolley of mass $300 \; kg$ carrying a sandbag of $25 \; kg$ is moving uniformly with a speed of $27 \; km/h$ on a frictionless track. After a while,sand starts leaking out of a hole on the floor of the trolley at the rate of $0.05 \; kg \cdot s^{-1}$. What is the speed (in $km/h$) of the trolley after the entire sandbag is empty?