Home
Class 12
PHYSICS
A car accelerates from rest at a constan...

A car accelerates from rest at a constant rate for some time after which it decelerates at a constant rate `beta` to come to rest. If the total time elapsed is t, the maximum velocity acquired by the car is given by :

A

`(alpha + beta)/(alpha beta)`

B

`( alpha ^2 + beta^2)/(alpha beta)`

C

`( alpha beta)/(alpha + beta) t`

D

`( alpha^(2) + beta^(2) )/(alpha beta) t`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MODEL TEST PAPER 10

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

  • MODEL TEST PAPER 4

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

A car accelerates from rest at a constant rate a for some time after which it retards at a constant rate to come to rest. If the time elapsed is t, maximum velocity reached is

A car accelerates from rest at constant rest a alpha t for same time after which it deaccelerates at constant rate beta to come to rest. If total time taken is t then distance covered is given by :

A car starting from rest, accelerates at a constant rate of 5 ms for some time. It then retards at a constant rate of 10 ms and finally comes to rest. If the total time taken is 6 s, what is the maximum speed attained by the car:

A car, starting from rest, accelerates at the rate f through a distance S, then continues at constant speed for time t and then decelerates at the rate f/2 to come to rest. If the total distance traversed is 5 S, then :

A body accelerates from rest with a uniform acceleration a for time t. The uncertainty in a is 8% and the uncertainty in t is 4% . The uncertainty in speed is :

A car travels from rest with a constant acceleration 'a' for 't' seconds. What is the average speed of the car for its journey if the car moves along a straight road?

A particle starts from rest and has acceleration of 2 ms-2 for 10 s. After that it travels for 30 s. with constant speed and then undergoes a constant retardation of 4 ms and comes back to rest. The total distance covered by the particle is:

KCET PREVIOUS YEAR PAPERS-MODEL TEST PAPER 3-(PHYSICS)
  1. There are three Newton's laws of motion namely I, II and III : we can ...

    Text Solution

    |

  2. The length of a wire is increased by 1 mm on the application of a give...

    Text Solution

    |

  3. A car accelerates from rest at a constant rate for some time after wh...

    Text Solution

    |

  4. कोणीय संवेग का विमीय सूत्र होता है :

    Text Solution

    |

  5. An ideal gas of N molecules occupies a volume V. The average kinetic e...

    Text Solution

    |

  6. Coefficient of linear expansion of brass and steel rods are alpha(1) a...

    Text Solution

    |

  7. The thermo-electric power P of a thermocouple is given by

    Text Solution

    |

  8. Unit of self inductance is

    Text Solution

    |

  9. A six volt battery is connected with a resistance. A current of 2 ampe...

    Text Solution

    |

  10. The galvanometer constant of a tangent galvanometer depends upon :

    Text Solution

    |

  11. A unit cube of copper and iron have

    Text Solution

    |

  12. At very low temperature , a semi-conductor becomes

    Text Solution

    |

  13. The resistance of a shunt which should be connected across a galvanome...

    Text Solution

    |

  14. What is a magnet ?

    Text Solution

    |

  15. The susceptibility of a ferromagnetic substance is

    Text Solution

    |

  16. Mention the SI unit of magnetising field.

    Text Solution

    |

  17. The electric flux of a surface enclosing an electric dipole is

    Text Solution

    |

  18. A line joining places of equal declinaiton is called

    Text Solution

    |

  19. Give an example for a ferromagnetic substance.

    Text Solution

    |

  20. The unit of magnetic induction B in SI is :

    Text Solution

    |