$A$ 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?

$A$ rider on horseback falls when the horse starts running all of a sudden because:

$STATEMENT-1$: $A$ cloth covers a table. Some dishes are kept on it. The cloth can be pulled out without dislodging the dishes from the table. Because
$STATEMENT-2$: For every action there is an equal and opposite reaction.

Explain: "For a car moving with constant (uniform) velocity, the resultant force is zero."

When a car at high speed makes a sharp turn,the driver in the car tends to get thrown in the direction opposite to that of the turn. This is due to which property?

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R.$
Assertion $A:$ An electric fan continues to rotate for some time after the current is switched off.
Reason $R:$ The fan continues to rotate due to inertia of motion.
In the light of the above statements,choose the most appropriate answer from the options given below.