Home
Class 11
PHYSICS
A particle is projected at an angle of 6...

A particle is projected at an angle of `60^(@)` above the horizontal with a speed of `10m//s`. After some time the direction of its velocity makes an angle of `30^(@)` above the horizontal. The speed of the particle at this instant is s

A

`5/sqrt3 m//s`

B

`5sqrt3` m/s

C

5 m/s

D

`10/sqrt3` m/s

Text Solution

Verified by Experts

The correct Answer is:
D
Let v be the velocity of projectile at this instant , Horizontal component of velocity remains unchanged .
Therefore , `v cos 30^(@) = 10 cos 60^@`
or `vsqrt3/2=10/2" or " v =10/sqrt3m//s`
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

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

  • KINEMATICS

    MTG GUIDE|Exercise CHECK YOUR NEET VITALS|22 Videos

  • KINEMATICS

    MTG GUIDE|Exercise Topicwise Practice Questions (MOTION IN A PLANE )|23 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 particle is projected at an angle of60∘ above the horizontal with a speed of 10m/s .When the projectile reaches highest point, change in velocity is

A particle is projected at an angle theta =30^@ with the horizontal, with a velocity of 10ms^(-1) . Then

A particle is projected at an angle 60^(@) with the horizontal with a speed 10m//s . Then, latus rectum is (Take g=10m//s^(2) )

A projectile is projected at 10ms^(-1) by making an angle 60^(@) to the horizontal. After sometime, its velocity makes an angle of 30^(@) to the horzontal . Its speed at this instant is:

A particle is projected with velocity 50 m/s at an angle 60^(@) with the horizontal from the ground. The time after which its velocity will make an angle 45^(@) with the horizontal is

A ball is projected at an angle 60^(@) with the horizontal with speed 30 m/s. What will be the speed of the ball when it makes an angle 45^(@) with the horizontal ?

A particle is projected from the ground at an angle of 60^@ with the horizontal with a speed by 20 m/s. The radius of curvature of the path of the particle, when its velocity makes an angle of 30^@ with horizontal is 80/9.sqrt(x) m Find x .

A particle is projected from the ground at an angle of 60^(@) with horizontal at speed u = 20 m//s. The radius of curvature of the path of the particle, when its velocity. makes an angle of 30^(@) with horizontal is : (g=10 m//s^(2)

MTG GUIDE-KINEMATICS -Topicwise Practice Questions (PROJECTILE MOTION)
  1. A projectile can have the same range R for two angles of projection. I...

    Text Solution

    |

  2. A ball is thrown from a point with a speed V(0),at an angle of project...

    Text Solution

    |

  3. A particle is projected at an angle of 60^(@) above the horizontal wit...

    Text Solution

    |

  4. A projectile is projected with the initial velocity (6i + 8j) m//s. Th...

    Text Solution

    |

  5. A body is thrown with a velocity of 9.8 m//s making an angle of 30^(@)...

    Text Solution

    |

  6. A projectile has initially the same horizontal velocity as it would ac...

    Text Solution

    |

  7. Three projectiles A, B and Care projected at an angle of 30^@, 45^@, 6...

    Text Solution

    |

  8. Two balls are projected making angles of 30° and 45°respectively with ...

    Text Solution

    |

  9. A hose lying on the ground shoots a stream of water upward at an angle...

    Text Solution

    |

  10. A ball is thrown at a certain angle with the horizontal and it returns...

    Text Solution

    |

  11. Two bodies are thrown up at angles of 45^@ and 60^@ respectively, wi...

    Text Solution

    |

  12. Four particles are fired with the same velocities at angles 250^@, 40^...

    Text Solution

    |

  13. The equations of motion of a projectile are given by x=36tm and 2y=96t...

    Text Solution

    |

  14. The speed of a projectile when it is at its greatest height is sqrt(2/...

    Text Solution

    |

  15. A ball of mass M is thrown vertically upwards. Another ball of mass 2M...

    Text Solution

    |

  16. A particle is projected from the ground with an initial speed of v at ...

    Text Solution

    |

  17. Two stones are projected with the same speed but making different angl...

    Text Solution

    |

  18. A ball is thrown at different angles with the same speed u and from th...

    Text Solution

    |

  19. A cricket ball thrown across a field is at heights h(1) and h(2) from ...

    Text Solution

    |

  20. A particle is projected from a horizontal plane with a velocity of 8sq...

    Text Solution

    |