(b)(c)Ans.(a) This graph shows that with increase in time distance first increases and then decreases. However, distancecan never decrease with time, so this graph is not possible.(0) This graph shows that at a certain time to the body is present at two positions. It also shows that tirst umeincreases and then decreases. Since both these conditions cannot be realised in practice, hence this graph isnot possible.(C) This graph shows that speed is negative for some interval of time. Since speed cannot be negative, this graphis also not possible.(a) This graph shows that at a given instant of time the particle has two velocities. Also, it shows that at some timeit has infinite acceleration (graph parallel to the velocity axis). Both these conditions cannot be achieved inpractice; therefore, this graph is also not possible.s Problems- QUESTIONS1. What are scalars ? Give an example.2. What are vectors ? Give an example.3. What is meant by rest?4. What is meant by motion?5. Give SI unit of distance and displacement.6. Give SI unit of speed and velocity.7. A particle completes motion along a circular path in a certain time. What will be its displacement?8. Give an example of non-uniform motion.9. Under what condition does the average velocity become equal to the instantaneous velocity?10. Can the equations of motion be used in a situation where acceleration varies with time? Can they be used when acceleration is zero?11 A honey bee leaves the hive and travels 2 km before returning. Is the displacement for the trip same as the distance travelled? If not,​