Home
Class 11
PHYSICS
Two particles A and B are located in x-y...

Two particles `A` and `B` are located in `x-y` plane at points `(0,0)` and `(0,4m)`. They simultaneoulsy start moving with velocities `v_(A)=2hatjm//s` and `v_(B)=2hatim//s`. Select the correct alternative(s)

A

the distance between them is constant

B

The distance between them first decreases and then increases

C

the shortest distance between them is `2sqrt(2)m`

D

Time after which they are at minimum distances is `1s`

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS 1

    DC PANDEY ENGLISH|Exercise COMPREHENSION_TYPE|19 Videos

  • KINEMATICS 1

    DC PANDEY ENGLISH|Exercise MATCH THE COLUMN|10 Videos

  • KINEMATICS 1

    DC PANDEY ENGLISH|Exercise INTEGER_TYPE|15 Videos

  • KINEMATICS

    DC PANDEY ENGLISH|Exercise INTEGER_TYPE|10 Videos

  • LAWS OF MOTION

    DC PANDEY ENGLISH|Exercise Medical entrances gallery|39 Videos

Similar Questions

Explore conceptually related problems

Two particles A and B located at points (0,-10sqrt(3)) and (0,0) in xy plane. They start moving simultaneously at time t=0 with constant velocities vecV_(A)=5hatim//s and vecV_(B)=-5sqrt(3)hatjm//s , respectively. Time when they are closest to each other is found to be K//2 second. Find K . All distance are given in meter.

Acceleration of a particle which is at rest at x=0 is vec a = (4 -2 x) hat i . Select the correct alternative (s).

Two particles A and B are projected simultaneously in the directins shown in figure with velocities v_(A) = 20 m//s and v_(B) = 10 m//s respectively. They collide in air after 1/2 s. Find (a) the angle theta (b) the distance x. .

Two particles start moving simultaneously from points (0, 0) and (1, 0) respectively in the OXY plane with uniform velocities v_(1) and v_(2) as shown in the figure. It is found that they collide. Then

Two particles A and B start at O travel in opposite directions along the circular path at constant speed v_(A)=0.7 m//s and v_(B)=1.5 m//s respectively. Determine the time when they collide and the magnitude of the acceleration of B just before this happening. ("radius"=5m)

Two particles A and B are located at point (0m, 50m) at t = 0 . The particle A moves withy a constant velocity and the particle B moves on a circle of radius 50 m having centre at origin (0, 0) as shown in figure. The pasrticle B has a constant speed 5pi m//s . What will be the velocity of particle A so that both the pasrticles reach at point (50m, 0m) simultaneously.

A charge particle of charge q and mass m is moving with velocity v as shown in fig In a uniform magnetic field B along -ve z-direction.Select the correct alternative (s).

Two particles A and B are situated at point (60,0) at t=0 . The particle A move on a circle given by X^(2)+Y^(2)=3600 and with a speed 6 pi m//s , while B moves with a constant velocity. Find the velocity of B so that the collision takes places between A and B at point (60,0) .

A motorcyclist situated at origin is located at a distance 12 m . Behind a car (Fig. 4.150). . At t=0 the motorcyclist stars moving with a constant velocity v= 8 m s^(-1) and same time the car starts acceleration from rest with a=2 m s&(-2) , (a) When and wher do they meet?

Graphical soluton of a two body head on collision A block A of mass m moving with a uniform velocity v_(0) strikes another identical block B kept at rest on a horizontal smooth surface as shown in the figure (i). We can conserve linear momentum. So mv_(0)=mv_(A)mv_(B) ( v_(A) and v_(B) are the velocities of the blocks after collision) :. v_(0)=v_(A)+v_(B) .........(i) If the collision is perfectly elastic 1/2 mv_(0)^(2)=1/2 mv_(A)^(2)+1/2 mv_(B)^(2) impliesv_(0)^(2)=v_(A)^(2)+v_(B)^(2) ......(ii) Both the above equation (i) and (ii) are plotted on v_(A)-v_(B) plane as shown in figure (ii). This plot can be used to find the unknowns v_(A) and v_(B) . For example the solution of the situation in figure (i) is v_(A)=0,v_(B)=v_(0) (point y in the plot) Because v_(A)=v_(0), v_(B)=0 (point x in the plot) is not physically possible. In a situation block A is moving with velocity 2m//s an strikes another identical block B kept at rest. The v_(A)-v_(B) plot for the situation is shown. m and l are the intersection points whose v_(A), v_(B) coordinaes are given in the figure. The coefficient of restitution of the collision is

DC PANDEY ENGLISH-KINEMATICS 1-MCQ_TYPE
  1. A particle moving along a straight line with uniform acceleration has ...

    Text Solution

    |

  2. Let r be the radius vector of a particle in motion about some referenc...

    Text Solution

    |

  3. Two particles A and B are located in x-y plane at points (0,0) and (0,...

    Text Solution

    |

  4. The co-ordinate of the particle in x-y plane are given as x=2+2t+4t^(2...

    Text Solution

    |

  5. River is flowing with a velocity v(BR)=4hatim//s. A boat is moving wit...

    Text Solution

    |

  6. A particle is moving along x-axis. Its velocity v with x co-ordinate i...

    Text Solution

    |

  7. From v-t graph shown in figure. We can draw the following conclusions

    Text Solution

    |

  8. A particle P is projected upwards with 80m//s. One second later anothe...

    Text Solution

    |

  9. Displacement time graph of a particle moving in a straight line is a s...

    Text Solution

    |

  10. At time t=0, a particle is at (-1m, 2m) and at t=2s it is at (-4m,6m)....

    Text Solution

    |

  11. A particle P lying on a smooth horizontal x-y plane starts from (3hati...

    Text Solution

    |

  12. Path of a particle moving in x-y plane is y=3x+4. At some instant supp...

    Text Solution

    |

  13. A particle moves along the X-axis as x=u(t-2s)=at(t-2)^2.

    Text Solution

    |

  14. A man standing on the edge of the terrace of a high rise building thro...

    Text Solution

    |

  15. The v-t graph for two particles P and Q are given in the figure. Consi...

    Text Solution

    |

  16. A particle is moving in a straight line along the positive x-axis such...

    Text Solution

    |

  17. A subway train travels between two of its stations at then stops with ...

    Text Solution

    |

  18. A particle starts moving with initial velocity 3m//s along x- axis fro...

    Text Solution

    |

  19. A train starts from rest at S = 0 and is subjected to an acceleration ...

    Text Solution

    |

  20. Man A is sitting in a car moving with a speed of 54 (km)/(hr) observes...

    Text Solution

    |