The force $\vec F\, = F\hat i$ on a particle of mass $2\, kg$, moving along the $x-$ axis is given in the figure as a function of its position $x$. The particle is moving with a velocity of $5\, m/s$ along the $x-$ axis at $x\, = 0$. What is the kinetic energy of the particle at $x\,= 8\, m$ ? .................. $\mathrm{J}$

What is the shape of the graph between the speed and kinetic energy of a body

The kinetic energy of a body moving along a straight line varies with time as shown in figure. The force acting on body

A car travelling at a speed of $30\, km/hour$  is brought to a halt in $8\, m$ by applying brakes. If the same car is travelling at $60 \,km/hour$, it can be brought to a halt with the same braking force in ............... $\mathrm{m}$

The same retarding force is applied to stop a train. The train stops after $80 m$. If the speed is doubled, then the distance will be

Tripling the speed of the motor car multiplies the distance needed for stopping it by