Home
Class 11
PHYSICS
A ball of mass m is projected from the g...

A ball of mass m is projected from the ground with an initial velocity u making an angle of `theta` with the vertical. What is the change in velocity between the point of projection and the highest point ?

A

`u cos theta` downward

B

`u cos theta` upward

C

`u sin theta` upward

D

`u sin theta` downward

Text Solution

Verified by Experts

The correct Answer is:
A
`Deltav = aDeltat = a ((T)/(2)) = (-g hatj) ((u cos theta)/(g)) = (-u cos theta) hatj`
Therefore, change in velocity is `u cos theta` in downward direction.
Promotional Banner

Topper's Solved these Questions

  • MOTION

    DC PANDEY|Exercise B. Medical entrance|1 Videos

  • MOTION

    DC PANDEY|Exercise Medical entrance|12 Videos

  • MOTION

    DC PANDEY|Exercise A. Taking it together|1 Videos

  • MEASUREMENT AND ERRORS

    DC PANDEY|Exercise Subjective|19 Videos

  • MOTION IN A PLANE

    DC PANDEY|Exercise (C )Medical entrances gallery|32 Videos

Similar Questions

Explore conceptually related problems

A particle is projected from the ground with an initial speed of v at an angle theta with horizontal. The average velocity of the particle between its point of projection and highest point of trajectroy is :

A particle is fired with velocity u making angle theta with the horizontal.What is the change in velocity when it is at the highest point?

A particle of mass 'm' is projected from ground with velocity u making angle theta with the vertical. The de-Broglie wave length of the particle at the highest point is:

A particle is projected from the ground with an initial speed v at an angle theta with horizontal. The average velocity of the particle between its point of projection and highest point of trajectory is [EAM 2013]

A particle of mass m is projected form ground with velocity u making angle theta with the vertical. The de Broglie wavelength of the particle at the highest point is

A ball is projected from the ground with velocity u such that its range is maximum Then

A particle of mass m is projected with an initial velocity U at an angle theta to the horizontal. The torque of gravity on projectile at maximum height about the point of projection is

A particle is projected from the ground with an initial speed of 5 m s^(-1) at an angle of projection 60° with horizontal. The average velocity of the particle between its time of projection and the time it reaches highest point of trajectory

A body of mass (m) is projected with a speed (v) making an angle theta with the vertical. What is the change in momentum of the body along (i) the X-axis (ii) the Y-axis , between the strting point and the highest point of its path.

DC PANDEY-MOTION-Taking it together
  1. A particle is thrown with a speed u at an angle theta with the horizo...

    Text Solution

    |

  2. A particle is projected in x-y plane with y-axis along vertical, the p...

    Text Solution

    |

  3. A ball of mass m is projected from the ground with an initial velocity...

    Text Solution

    |

  4. A ball is projected form ground with a speed of 20 ms^(-1)

    Text Solution

    |

  5. A particle (A) is dropped from a height and another particles (B) is t...

    Text Solution

    |

  6. A bullet is to be fired with a speed of 2000 m//s to hit a target 200 ...

    Text Solution

    |

  7. An aeroplane moving horizontally with a speed of 720 km//h drops a foo...

    Text Solution

    |

  8. A boy can throw a stone up to a maximum height of 10 m. The maximum h...

    Text Solution

    |

  9. At the height 80 m , an aeroplane is moving with 150 m//s . A bomb is ...

    Text Solution

    |

  10. A particle moves along a parabolic path y=-9x^(2) in such a way that t...

    Text Solution

    |

  11. A projectile has the maximum range of 500m. If the projectile is now t...

    Text Solution

    |

  12. A ball is thrown from a point O aiming a target at angle 30^(@) with t...

    Text Solution

    |

  13. The range of a projectile fired at an angle of 15^@ is 50 m. If it is ...

    Text Solution

    |

  14. A cricket fielder can throw the cricket ball with a speed v(0).If the ...

    Text Solution

    |

  15. Two stones are projected so as to reach the same distance from the poi...

    Text Solution

    |

  16. A projectile A is thrown at an angle 30^(@) to the horizontal from poi...

    Text Solution

    |

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

    Text Solution

    |

  18. A ball is thrown from a point with a speed 'v^(0)' at an elevation ang...

    Text Solution

    |

  19. An arrow is shot into air. Its range is 200m and its time of flight is...

    Text Solution

    |

  20. A particle of mass 2kg moves with an initial velocity of vec(v)=4hat(i...

    Text Solution

    |