Bissoy.com
Doctors Medicines MCQs Q&A

A car is moving in a uniform circular motion. Then it has -

A car is moving in a uniform circular motion. Then it has - Correct Answer Radial acceleration

Concept:

Circular Motion: Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path.

  •  The force acts continuously at right angles to the velocity of the particle.

Uniform circular motion: The circular motion in which the speed of the particle remains constant is called uniform circular motion.

  • In a uniform circular motion, force supplies the centripetal/radial acceleration.

ac = v2 / r

Where ac = Centripetal acceleration, v = Velocity, r = Radius.

The speed and kinetic energy of the particle remains constant.

[ alt="F1 J.K Madhu 19.05.20 D1" src="//storage.googleapis.com/tb-img/production/20/05/F1_J.K_Madhu_19.05.20_D1.png" style="width: 288px; height: 235px;">

Non-uniform circular motion: The circular motion in which the speed of the particles changes by time is called nonuniform circular motion.

  • It has radial as well as tangential acceleration.

Explanation:

  • There is only one acceleration in case of uniform circular motion that is centripetal acceleration and this acceleration is always along the radius and towards the center of the circular path. 
  • In the case of non-uniform circular motion, there is a tangential acceleration also. So the net acceleration is not in the direction of radius.

Related Questions

Three cars start from point A together and reach point B at equal intervals. Second car whose sped is less than third car but more than first car taken a u turn and starts its journey towards A whereas third car heads for point C which is 100 km away from point B. First car and third car meet each other at mid way of A and C after third car takes u turn from C. First car travels half the distance between A and B when second reaches B. The sum of speed of second car and third car is 100 kmh.  What is the difference between speed of third car and first car?
Seven people A, B, C, D, E, F and G live on separate floors of a 7-floor building. Ground floor is numbered 1, first floor is numbered. 2 and so on until the topmost floor is numbered 7. Each one of these having a different cars-Cadillac, Ambassador, Fiat, Maruti, Mercedes, Bedford and Fargo but not necessarily in the same order. Only three people live above the floor on which A lives. Only one person lives between A and the one having a car Cadillac. F lives immediately below the one having a car Bedford. The one having a car Bedford lives on an even-numbered floor. Only three people live between the ones having a car Cadillac and Maruti. E lives immediately above C. E is not having a car Maruti. Only two people live between B and the one having a car Fargo. The one having a car Fargo lives below the floor on which B lives. The one having a car Fiat does not live immediately above D or immediately below B. D does not live immediately above or immediately below A. G does not have a car Ambassador. Question : How many people live between the floors on which D and the one having a car Bedford ?
Each of the question below consists of a question and three statements number I, II and III given below it. You have to decide whether the data provided in the statement are sufficient to answer the question. If the bus is travelling from Surat to Ahmadabad and a car is travelling from Ahmadabad to Surat, then what is the distance between Surat and Ahmadabad? I. The speed of a car is 40% less than the speed of bus. Bus started at 9 am and car started at 10 am and they meet at 3 pm of the same day. II. After travelling for 1 hour, because of traffic average speed of bus is decreased by 20% and covers distance between Surat to Ahmadabad in 11 hours. Original speed of car is 20% less than original speed of bus and before crossing bus it covered 200 km if starts 1 hour later than bus. After crossing car, bus covers remaining distance in 5 hours. III. Speed of bus is 10 km/hr more than the speed of car and before crossing car ratio of distances covered bus and car in same time was 5 : 4. Time taken by car to cover the distance between Ahmadabad and Surat is 2 hours 15 minutes more than time taken by bus to cover the same distance.
A company sold six different cars Swift, Santro, Creta, Audi, I10 and Magna during a period of Monday to Saturday. Only one car was sold on a particular day. No car was sold twice. Atleast four cars were sold after the car Santro. The car Magna was sold on Tuesday. The car Audi was sold immediately after the car Creta and car Creta was sold atleast before three cars. Both the cars Santro and I10 were sold atleast before one car. On which day was Swift car sold?
Consider the following types of motion.  A. Periodic Motion B. Straight Line Motion C. Rotational Motion D. Circular Motion The motion of a pendulum can be categorised in which of the following types of motion?
There were 6 friends A, B, C, D, E and F. Everyone is good in one of the following  games : Baseball, Volleyball, Carom, Hockey, TT and Polo. Each owns a different coloured car-yellow, green, black, white, blue and red. D plays polo and has yellow car. C does not play TT and Hockey and owns neither blue nor yellow car. E has white car and plays Baseball. B doesn’t play TT, he has red car. A plays carom and has black car. Based on this information answer the following question : Which coloured car F owns and which game F plays ?
Car A was leading Car B by 110 m. After four seconds, Car B managed to cross Car A. The speed of Car B is 10% more than the speed of Car A, then what will be the speed of Car B?
Eight students L, B, S, D, M, F, O and H are going for a car racing. There are only two cars and following are the conditions: (i) Four students can sit in one car. (ii) L and D sit in a same car but not with H. (iii) B and S cannot sit in the same car in which D is sitting. (iv) F will sit in the car along with L and M but certainly not with O. If H and O are sitting in the same car, who are other two students sitting in the same car?
Five friends A, B, C, D and E bought cars which were priced differently. B's car was costlier than C's car but was less costly than E's car. A's car was costlier than D's car but less costly than C's car. Whose car was the 2nd costliest?
Car A leads Car B by 50 meters. After three seconds the Car B is leading Car B by 30 meters. The speed of Car B is 20% more than Car A. What will be the distance travelled by Car B in those three seconds?