MCQ
The $x - t$ graph shown in figure represents
- AConstant velocity
- BVelocity of the body is continuously changing
- CInstantaneous velocity
- ✓The body travels with constant speed upto time ${t_1}$ and then stops
✓
Answer
Correct option: D.
The body travels with constant speed upto time ${t_1}$ and then stops
d
(d)Up to time ${t_1}$ slope of the graph is constant and after ${t_1}$slope is zero i.e. the body travel with constant speed up to time ${t_1}$ and then stops.
(d)Up to time ${t_1}$ slope of the graph is constant and after ${t_1}$slope is zero i.e. the body travel with constant speed up to time ${t_1}$ and then stops.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Five molecules of a gas are having speeds $1,2,4,8$ and $16\,m/s$ at some instant. The root mean square velocity of the gas molecules is ..... $m/s$
→Electric conduction takes place in a discharge tube due to the movement of:
- Positive ions.
- Negative ions.
- Electrons.
- Protons.
A thermodynamic system is taken form an initial state $i$ with internal energy $U_1=100 \ J$ to the final state along two different paths iaf and ibf, as schematically shown in the fire. The work done by the system along the paths $af$, ib and bf are $W _{ af }=200 \ J , W _{ ID }=50 \ J$ and $W _{ br }=100 \ J$ respectively. The heat supplied to the system along the path iaf, ib and bf are $Q_{\mid a t l} Q_{b r}$ and $Q_{10}$ respectively. If the internal energy of the sytem in the state $b$ is $U_b=$ $200 \ J$ and $Q_{l a t}=500 \ J$, the ratio $Q_{b J} / Q_{10}$ is:
→A ball of mass $( m )=0.5 \ kg$ is attached to the end of a string having length $(L)$ $=0.5 m$. The ball is rotated on a horizontal circular path about vertical axis. The maximum tension that the string can bear is $324 \ N$. The maximum possible value of angular velocity of ball (in radian/s) is
→Two sound sources emitting sound each of wavelength $\lambda$ are fixed at a given distance apart. A listener moves with a velocity u along the line joining the two sources. The number of beats heard by him per second is:
→A thin uniform bar of length $L$ and mass $8\,m$ lies on a smooth horizontal table. Two point masses $m$ and $2\,m$ moving in the same horizontal plane from opposite sides of the bar with speeds $2v$ and $v$ respectively. The masses stick to the bar after collision at a distance $\frac{L}{3}$ and $\frac{L}{6}$ respectively from the centre of the bar. If the bar starts rotating about its center of mass as a result of collision, the angular speed of the bar will be
→The angular momentum of a moving body remains constant if
Three identical square plates rotate about the axes shown in the figure in such a way that their kinetic energies are equal. Each of the rotation axes passes through the centre of the square. Then the ratio of angular speeds $\omega _1 : \omega _2 : \omega _3$ is
→The retarding acceleration of $7.35\, ms^{-2}$ due to frictional force stops the car of mass $400\, kg$ travelling on a road. The coefficient of friction between the tyre of the car and the road is
→A cyclist taking turn bends inwards while a car passenger taking same turn is thrown outwards. The reason is