Home
Class 11
PHYSICS
The velocity ofacar travelling on a stra...

The velocity ofacar travelling on a straight road is given by the equation `v=6+8t-t^(2)` where vis in meters per second and t in seconds. The instantaneous acceleration when `t=4.5 s` is :

A

`0.1 m//s^(2)`

B

`1 m//s^(2)`

C

`-1 m//s^(2)`

D

`-0.1 m//s^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Advance MCQs with One or More Options Correct|17 Videos

  • KINEMATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Pro.|83 Videos

  • KINEMATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Conceptual MCQs Single Option Correct|35 Videos

  • GRAVITATION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical|94 Videos

  • LINEAR MOMENTUM & ITS CONSERVATION

    PHYSICS GALAXY - ASHISH ARORA|Exercise exercise 1.3|3 Videos

Similar Questions

Explore conceptually related problems

The position of a particle moving along a straight line is defined by the relation, x=t^(3)-6t^(2)-15t+40 where x is in meters and t in seconds.The distance travelled by the particle from t=0 to t=2 s is?

The displacement of a particle moving in a straight line, is given by s = 2t^2 + 2t + 4 where s is in metres and t in seconds. The acceleration of the particle is.

The motion of a particle along a straight line is described by the function x=(2t -3)^2, where x is in metres and t is in seconds. Find (a) the position, velocity and acceleration at t=2 s. (b) the velocity of the particle at the origin .

The velocity v of a body moving along a straight line varies with time t as v=2t^(2)e^(-t) , where v is in m/s and t is in second. The acceleration of body is zero at t =

A car is moving in such a ways that the distance it covers , is given by the equations s = 4t^(2) +3t, where s, is in meters and t is in seconds . What would be the velocity and the accelerations of the car at time t=20 seconds?

The velocity of particle at time t is given by the relation v=6t-(t^(2))/(6) . The distance traveled in 3 s is, if s=0 at t=0

The position of a particle is given by the equation f(t)=t^(3)-6t^(2)+9t where t is measured in second and s in meter. Find the acceleration at time t. What is the acceleration at 4 s?

The velocity 'v' of a particle moving along straight line is given in terms of time t as v=3(t^(2)-t) where t is in seconds and v is in m//s . The distance travelled by particle from t=0 to t=2 seconds is :

PHYSICS GALAXY - ASHISH ARORA-KINEMATICS-Numerical
  1. For the velocity time graph shown in Fig. 2 (CF).14, the distance cove...

    Text Solution

    |

  2. A particle is moving in a straight line and passes through a point O w...

    Text Solution

    |

  3. The velocity ofacar travelling on a straight road is given by the equa...

    Text Solution

    |

  4. The following figure-1.114 shows the linear motion velocity-time graph...

    Text Solution

    |

  5. In the above question, the acceleration in the portion OA of the curve...

    Text Solution

    |

  6. In the above question, which portion of the will have zero acceleratio...

    Text Solution

    |

  7. A particle has initial velocity of 17 ms^(-1) towards east and constan...

    Text Solution

    |

  8. A ball is thrown vertically upwards from the ground. It crosses a poin...

    Text Solution

    |

  9. The velocity of a particle moving on the x- axis is gienv by v=x^(2)+x...

    Text Solution

    |

  10. A rocket is projected vertically upwards and its time velocity graph i...

    Text Solution

    |

  11. In the previous question, the height attained by the rocket before dec...

    Text Solution

    |

  12. In the previous question, the mean velocity of the rocket reaching the...

    Text Solution

    |

  13. In the above question, the acceleration of the rocket is :

    Text Solution

    |

  14. The engine of a motoecycle can produce a maximum acceleration of 5 m//...

    Text Solution

    |

  15. Two balls are dropped from the same point after an interval of 1s. If ...

    Text Solution

    |

  16. The following figure-1.116 shows the time and applied force graph for ...

    Text Solution

    |

  17. A person throws balls into the air one after the other at an interval ...

    Text Solution

    |

  18. A body starts from rest and moves for n seconds with uniform accelerat...

    Text Solution

    |

  19. The displacement-time graph for two particle A and B straight lines in...

    Text Solution

    |

  20. A particle has an initial velocity of 9m//s due east and a constant ac...

    Text Solution

    |