A driver travelling at speed $36{\mathrm{kmh}}^{-1}$ sees the light turn red at the intersection. If his reaction time is $0.6 \mathrm{s}$, and then the car can deaccelerate at $4 \mathrm{m} {\mathrm{s}}^{-2}$. Find the stopping distance of the car in meter.

A train moves from one station to another in two hours time. Its speed during the motion is shown in the graph. Calculate distance covered in $\mathrm{km}$ during the time interval from $0.75$ hours to $1$ hours.

A particle starts motion from rest and moves along a straight line. Its acceleration-time graph is shown. Find out speed of particle at $2$ second in $\mathrm{m} {\mathrm{s}}^{-1}$.