Home
Class 11
PHYSICS
A car starts from rest and accelerates a...

 A car starts from rest and accelerates at uniform rate of `6 m s^(-2)` for some time, then moves with constant speed for some time and retards at the same uniform rate and comes to rest. Total time for the journey is 24 s and average speed for journey is `20 m s^(-1)` , How long does the car move with constant speed?

A

4 s

B

8 s

C

12 s

D

16 s

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

    MTG GUIDE|Exercise AIPMT/ NEET MCQs|31 Videos

  • KINEMATICS

    MTG GUIDE|Exercise Topicwise Practice Questions (UNIFORM CIRCULAR MOTION)|8 Videos

  • GRAVITATION

    MTG GUIDE|Exercise AIPMT/NEET MCQS|32 Videos

  • LAWS OF MOTION

    MTG GUIDE|Exercise AIPMT /NEET (MCQ)|24 Videos

Similar Questions

Explore conceptually related problems

A bus starts from rest and acceleration at a uniform rate 4 m//s^(2) for certain time. It then moves with a constant speed for some time and finally retards at 4 m//s^(2) to come to rest. Average speed of the bus during the total journey is 15 m/s and the total time is 20 sec. Time duration for which the car moves with constant speed is:

A car starts from rest and accelerates uniformly to a speed of 180 kmh^(-1) in 10 s. The distance covered by the car in the time interval is

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

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 travelled is 15 s, then

A car accelerates from rest at a constant rate of 2 m s^(-2) for some time. The it retatds at a constant rate of 4 m s^(-2) and comes to rest. It remains in motion for 6 s .

A car, starting from rest, accelerates at the rate (f) through a distance (S), then continues at constant speed for some time (t) and then decelerates at the rate f//2 to come to rest. If the total distance is 5 S , then prove that S=1/2/ ft^(@) .

A Bullet Train in Japan starting from rest accelerates uniformly at 0.5m s^(-2) for 2 minutes. It then maintains uniform speed for 20 minutes and then retards uniformly at the rate of 0.25 m s^(-1) and comes to rest. Calculate the average speed of the train

A car starts from rest and moves with uniform acceleration for time t then it moves with uniform speed of 60 km/h for time 3t and comes to rest. Find the average speed of car in its total journey.

MTG GUIDE-KINEMATICS -CHECK YOUR NEET VITALS
  1. Two card are moving in the same direction with the same speed of 30 k...

    Text Solution

    |

  2. A particle is projected from the ground with an initial speed of 5 m s...

    Text Solution

    |

  3. A man running at a speed of 5 kmph finds that the rain falls verticall...

    Text Solution

    |

  4. A certain vector in the xy-plane has an x-component of 4 m and a y-com...

    Text Solution

    |

  5. A police party is moving in a jeep at a constant speed v. They saw a t...

    Text Solution

    |

  6. A car starts from rest and accelerates at uniform rate of 6 m s^(-2) ...

    Text Solution

    |

  7. A particle P is moving in a circle of radius r with a uniform speed u....

    Text Solution

    |

  8. The distance travelled by a particle in time t is given by x = kt^3 , ...

    Text Solution

    |

  9. The maximum height attained by a projectile is increased by 1% by incr...

    Text Solution

    |

  10. A cricketer can throw a ball to a maximum horizontal distance of 200 m...

    Text Solution

    |

  11. A particle moving along the x axis has position given by x = (24t - 2....

    Text Solution

    |

  12. The position of a particle is given by  vecr = 3.01t hati +2. 0 t^2 ha...

    Text Solution

    |

  13. Which one of the following statements is true?

    Text Solution

    |

  14. Which of the following statements is correct about the average velocit...

    Text Solution

    |

  15. Suppose that two objects A and B are moving with velocities vecv(A) ...

    Text Solution

    |

  16. For a particle performing uniform circular motion, choose the incorrec...

    Text Solution

    |

  17. For two vectors vecA and vecB, |vecA+vecB|= |vecA - vecB| is always t...

    Text Solution

    |

  18. A fighter plane is flying horizontally at an altitude of 1.5 km with s...

    Text Solution

    |

  19. Two particls are projected in air with speed u at angles theta(1) and ...

    Text Solution

    |

  20. Rain is falling vertically with a speed of 30 ms^(-1) A woman rides a...

    Text Solution

    |