Can you suggest about the kind of motion of a body from following distance$-$time graphs ?

What do uou understand by the term acceleration ? When is it positive and when is it negative ?

There is an argument about uniform acceleration between $Mr$ $X$ and $Mr$ $Y.$ $Mr$ $X$ says "acceleration means that farther you go faster you go". $Mr$ $Y$ says "acceleration means that longer you go the faster you go". Whose statement is correct ?

A train $100 \,m$ long is moving with a velocity of $60\, km h^{-1}$. Find the time it takes to cross the bridge $1\, km$ long.

Draw the distance$-$time graph for the following situations

$(a)$ When a body is stationary.

$(b)$ When a body is moving with a uniform speed.

$(c)$ When a body is moving with non$-$uniform speed.