Constant acceleration means the slope of the $x-t$ graph is constant. True or False?

The distance covered by the particle in the last $2\,s$ is what fraction of the total distance covered by it in $7\,s$?

Which one of the following represents the displacement-time graph of two objects $A$ and $B$ moving with zero relative velocity?

For a body moving along a straight line, the following $v-t$ graph is obtained. According to the graph, the displacement during

For the following velocity-time graph, the average speed for the motion during first $80 \, s$ is

The diagram shows the variation of $1/v$ (where $v$ is the velocity of the particle) with respect to time $t$. Using the details given in the graph,the instantaneous acceleration at time $t = 3\,s$ will be equal to $...........\,m/s^2$.