Home
Class 11
PHYSICS
Let v and a be the instantaneous velocit...

Let `v` and `a` be the instantaneous velocity and acceleration of a particle moving in a plane. Then rate of change of speed `(dv)/(dt)` of the particle is equal to

A

`|a|`

B

`(v.a)/v`

C

the component of `a` parallel to `v`

D

the component of `a` perpendicular to `v`

Text Solution

Verified by Experts

The correct Answer is:
B, C
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS 1

    DC PANDEY|Exercise COMPREHENSION_TYPE|19 Videos
  • KINEMATICS 1

    DC PANDEY|Exercise MATCH THE COLUMN|10 Videos
  • KINEMATICS 1

    DC PANDEY|Exercise INTEGER_TYPE|15 Videos
  • KINEMATICS

    DC PANDEY|Exercise INTEGER_TYPE|11 Videos
  • LAWS OF MOTION

    DC PANDEY|Exercise Medical entrances gallery|39 Videos

Similar Questions

Explore conceptually related problems

Let v and a represent instantaneous velocity and acceleration of a particle respectively.

The graph between instantaneous velocity and acceleration of a particle performing S.H.M. is

At any instant, the velocity and acceleration of a particle moving along a straight line are v and a. The speed of the particle is increasing if

Derive an expression for instantaneous velocity and acceleration of a particle executing simple harmonic motion.

A particle moves in the x-y plane according to the law x=t^(2) , y = 2t. Find: (a) velocity and acceleration of the particle as a function of time, (b) the speed and rate of change of speed of the particle as a function of time, (c) the distance travelled by the particle as a function of time. (d) the radius of curvature of the particle as a function of time.

A particle is moving in a circle with a constant speed, the acceleration of the particle has

The ratio of instantaneous velocity and the average speed of the particle performing S.H.M. is

Starting from rest, the acceleration of a particle is a=2(t-1) . The velocity (i.e. v=int" a dt " ) of the particle at t=10 s is :-

Acceleration of particle moving in straight line can be written as a=(dv)/(dt)=v(dv)/(dx) . From the given graph find acceleration at x=20 m .

DC PANDEY-KINEMATICS 1-MCQ_TYPE
  1. Velocity displacement graph of a particle moving in a straight line is...

    Text Solution

    |

  2. Let v and a be the instantaneous velocity and acceleration of a partic...

    Text Solution

    |

  3. Starting from rest a particle is first accelerated for time t1 with co...

    Text Solution

    |

  4. A particle leaves the origin with an initial velodty v= (3.00 hati) m/...

    Text Solution

    |

  5. Acceleration of a particle which is at rest at x=0 is vec a = (4 -2...

    Text Solution

    |

  6. A car is moving rectilinearly on a horizontal path with acceleration ...

    Text Solution

    |

  7. The coordinate of a particle moving in a plane are given by x(t) = ...

    Text Solution

    |

  8. a particle moving along a straight line with uniform acceleration has ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |