Home
Class 11
PHYSICS
An object starting from rest and perform...

An object starting from rest and performing | 41 uniform accelerated motion gains 144 km/h speed in 20 s, then what will be distance covered in 20 s?

A

20

B

400

C

1440

D

2880

Text Solution

Verified by Experts

The correct Answer is:
B
`u = 144 kmh^(-1) = (144000)/(3600) = 40 ms ^(-1)`
Now `d = ((v + v _(0))/( 2)) t = ((40 + 0)/(2)) 20`
`therefore d = 400 m`
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A STRAIGHT LINE

    KUMAR PRAKASHAN|Exercise SECTION-F|20 Videos

  • MOTION IN A STRAIGHT LINE

    KUMAR PRAKASHAN|Exercise QUESTION PAPER|11 Videos

  • MOTION IN A STRAIGHT LINE

    KUMAR PRAKASHAN|Exercise SECTION-D|26 Videos

  • MECHANICAL PROPERTIES OF FLUIDS

    KUMAR PRAKASHAN|Exercise QUESTION PAPER (SECTION -C)|3 Videos

  • OBJECTIVE QUESTIONS AS PER NEW PAPER STYLE

    KUMAR PRAKASHAN|Exercise CHAPTER - 8 (Match Type questions)|5 Videos

Similar Questions

Explore conceptually related problems

A train starting from a railway station and moving with uniform acceleration attains a speed of 40 km ^(-1) in 10 minute. Find its acceleration.

An object starting from rest undergoes an acceleration of 8ms ^(-2) for 10 second. Find (a) the speed (b) the distance travelled.

If a car at rest, accelerates uniformly to a speed of 144 km//h in 20s , it covers a distance of

The velocity of an object of mass 200 kg , performing unifrom acceleration motion , change from 5 m/s to 10 m/s in 6s then calculate the initial and final momentuum of this object.

A racing car has a uniform acceleration of 4 ms ^(-2). What distance will it cover in 10 s after the start ?

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.

For an object starting from rest with uniform acceleration which of the following graph is incorrect, where s, v, t are displacement, velocity & time.

KUMAR PRAKASHAN-MOTION IN A STRAIGHT LINE -SECTION-E
  1. The ratio of the speeds of the objects of masses m(1), m(2), and my re...

    Text Solution

    |

  2. What will be the velocity of object thrown upwards with 40 ms^(-1) aft...

    Text Solution

    |

  3. An object starting from rest and performing | 41 uniform accelerated m...

    Text Solution

    |

  4. The displacement of particle with respect to time is s = 3^(t3) - 7t^(...

    Text Solution

    |

  5. Displacement of particle changes with respect to time according to equ...

    Text Solution

    |

  6. The ratio of time taken by two objects A and B of masses 1 kg and 3 kg...

    Text Solution

    |

  7. Water drops are falling from a pipe at 5 m height at regular interval ...

    Text Solution

    |

  8. A car moving with a speed of 40 km/h can be stopped by applying brakes...

    Text Solution

    |

  9. A stone is dropped from the top of tower. If its velocity at the mid p...

    Text Solution

    |

  10. A person throws balls upward in regular intervals of time of 2 s. What...

    Text Solution

    |

  11. A particle moves in X-direction with acceleration f from rest. This ac...

    Text Solution

    |

  12. A ship A is moving Westwards with a speed of 10 km h^(-1) and a ship ...

    Text Solution

    |

  13. A particle of unit mass undergoes one dimensional motion such that its...

    Text Solution

    |

  14. Two stones of masses m and 2 m are whirled in horizontal circles, the ...

    Text Solution

    |

  15. Two cars P and Q start from a point at the same time in a straight lin...

    Text Solution

    |

  16. Find the area of a square inscribed in a circle of radius 8 cm.

    Text Solution

    |

  17. A stone falls freely under gravity. It covers distances h(1), h(2) and...

    Text Solution

    |

  18. In an n type silicon, which of the following statements is true:

    Text Solution

    |

  19. The displacement of object is proportional to cube of the time, then a...

    Text Solution

    |

  20. When a man walks he waves his hands, because……….

    Text Solution

    |