Given below are two statements:
Statement $I:$ A truck and a car moving with same kinetic energy are brought to rest by applying brakes which provide equal retarding forces. Both come to rest in equal distance.
Statement $II:$ A car moving towards east takes a turn and moves towards north, the speed remains unchanged. The acceleration of the car is zero.
In the light of given statements, choose the most appropriate answer from the options given below.
Statement $I$ is correct but Statement $II$ is incorrect.
Statement $I$ is incorrect but Statement $II$ is correct.
Both Statement are correct.
Both Statement are false.
A bullet of mass $20\,g$ has an initial speed of $1\,ms^{-1}$ just before it starts penetrating a mud wall of thickness $20\,cm.$ If the wall offers a mean resistances of $2.5 \times 10^{-2}\,N,$ the speed of the bullet after emerging from the other side of the wall is close to .............. $\mathrm{ms}^{-1}$
What is the energy equivalent to one kilogram.
An unloaded bus can be stopped by applying brakes on straight road after covering a distance $x$. Suppose, the passenger add $50 \%$ of its weight as the load and the braking force remains unchanged, how far will the bus go after the application of the brakes? (Velocity of bus in both case is same)
A graph of potential energy $V(x)$ verses $x$ is shown in figure. A particle of energy $E_0$ is executing motion in it. Draw graph of velocity and kinetic energy verses $x$ for one complete cycle $AFA$.
A block of mass $m$ is sliding down an inclined plane with constant speed.At a certain instant $t_0$, its height above the ground is $h$. The coefficient of kinetic friction between the block and the plane is $\mu$. If the block reaches the ground at a later instant $t_g$, then the energy dissipated by friction in the time interval $\left(t_g-t_0\right)$ is