Home
Class 12
PHYSICS
A particle is moving along x-direction w...

A particle is moving along x-direction with a constant acceleration a. The particle starts from `x=x_0` position with initial velocity u. We can define the position of the particle with time by the relation
`x=x_0+ut+(1)/(2)at^2`
plot the position of the particle in relation with time is following situations
(i) If initial position of the particle is on negativ x-axis, initial velocity is positive and acceleration is negative.
(ii) If initial position is positive, initial velocity is negative and acceleration is positive.

Text Solution

Verified by Experts

Let `t_(0)` be the time which it come to a stop.
Given that `-(dt)/(dt)=ksqrt(v)" "underset(0)overset(t_(0))int kdt=underset(v_(0))overset(0)int-(dv)/(sqrt(V))`
`because kt_(0)=2sqrt(v_(0)) therefore=(2)/(k)sqrt(v_(0))`
Now to find the distance covered before stopping,
`(dv)/(dt)=(dv)/(ds)(ds)/(dt)=v(dv)/(ds)` But, `(dv)/(dt)=-Ksqrt(V),`
`therefore v(dv)/(ds)=-ksqrt(V) therefore sqrt(dv)=-kds`
`therefore underset(v_(0))overset(0)intsqrt(v_(0))int sqrt(v)dv=-underset(0)overset(s)int` k ds`implies s(2)/(3k)V_(0)^((3)/(2))`
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A STRAIGHT LINE

    AAKASH SERIES|Exercise Numerical exercise(LEVEL-1)|22 Videos
  • MOTION IN A STRAIGHT LINE

    AAKASH SERIES|Exercise Numerical exercise(LEVEL-2)|29 Videos
  • MOTION IN A STRAIGHT LINE

    AAKASH SERIES|Exercise PRACTICE EXERCISE|58 Videos
  • MOTION IN A PLANE

    AAKASH SERIES|Exercise QUESTION FOR DESCRIPTIVE ANSWER|7 Videos
  • MOVING CHARGES AND MAGNETISM

    AAKASH SERIES|Exercise EXERCISE-III|49 Videos

Similar Questions

Explore conceptually related problems

If a particle starts moving with initial velocity u=1ms^-1 and acceleration a=2ms^-2 , the veloctiy of the particle at any time is given by v=u+at=1+2t . Plot the velocity-time graph of the particle.

A particle of mass m is moving along the line y-b with constant acceleration a. The areal velocity of the position vector of the particle at time t is (u=0)

The position x of a particle varies with time t as x=at^(2)-bt^(3) .The acceleration of the particle will be zero at time t equal to

The velocity time relation of a particle is given by v = (3t^(2) -2t-1) m//s Calculate the position and acceleration of the particle when velocity of the particle is zero . Given the initial position of the particle is 5m .

For a particle moving along straight line with constant acceleration (a), we define velocity of the particle with time as v=u+at , (u = initial velocity) Draw the velocity-time graph of the particle in following situations. (i) Velocity is decresing with time (i.e., acceleration in negative) (ii) Initial velocity is negative but acceleration is positive

A particle is moving with constant speed v along x - axis in positive direction. Find the angular velocity of the particle about the point (0, b), when position of the particle is (a, 0).

A particle is moving along the x-axis with an acceleration a = 2x where a is in ms^(–2) and x is in metre. If the particle starts from rest at x=1 m, find its velocity when it reaches the position x = 3.

The position x of a particle varies with time t as x=at^(2)-bt^(3) . The acceleration at time t of the particle will be equal to zero, where (t) is equal to .

The position x of a particle varies with time t as x=at^(2)-bt^(3) . The acceleration at time t of the particle will be equal to zero, where (t) is equal to .

Figure shows the position of a particle moving on the X-axis as a function of time.

AAKASH SERIES-MOTION IN A STRAIGHT LINE -problems
  1. Show that when a particle moves with uniform acceleration , the distan...

    Text Solution

    |

  2. A car accelerates from rest at a constant rate alpha for some time, af...

    Text Solution

    |

  3. A particle is moving along x-direction with a constant acceleration a....

    Text Solution

    |

  4. A particle is droped under gravety from rest a height h and it travels...

    Text Solution

    |

  5. A steel ball is dropped from the roof of a building .An observer stand...

    Text Solution

    |

  6. Two balls are dropped to the ground from different heights. One ball i...

    Text Solution

    |

  7. A stone is dropped from a height 300 m and at the same time another st...

    Text Solution

    |

  8. A stone A is dropped from rest from a height h above the ground.A seco...

    Text Solution

    |

  9. A particle P is projected Vertically upward from a point A . Six secon...

    Text Solution

    |

  10. A body when projected vertically up, covers a total distance D during ...

    Text Solution

    |

  11. Drop of water fall at regular intervals from roof of a building of hei...

    Text Solution

    |

  12. A ball thrown up from the ground reaches a maximum height of 20 m Find...

    Text Solution

    |

  13. A particle is projected vertically upwards. Prove that it will be at t...

    Text Solution

    |

  14. An object falls from a bridge which is 45 m above the water. It falls ...

    Text Solution

    |

  15. On a frictionless horizontal surface , assumed to be the x-y plane ,...

    Text Solution

    |

  16. Two particles 1 and 2 are allowed to descend on two frictionless chord...

    Text Solution

    |

  17. Ball A dropped from the top of a building. A the same instant ball B i...

    Text Solution

    |

  18. A helicopter is ascending vertically with a speed of 8.0 "ms"^(-1). At...

    Text Solution

    |

  19. A stone is thrown vertically upward with a speed of 10.0 ms^(-1) from ...

    Text Solution

    |

  20. A body took 't' sec. to come down from top of tower.Find the time take...

    Text Solution

    |