Home
Class 12
PHYSICS
A particle is projected at an angle thet...

A particle is projected at an angle `theta` from ground with speed u (g = 10 m/`s^2` )

A

if u = 10 m/s and `theta = 30^@`, then time of flight will be 1 sec

B

If `u=10sqrt(3)m//s and theta=60^(@)`, then time of flight will be 3 sec.

C

if `u=10sqrt(3)m//s and theta=60^(@)`, then after 2 sec velocity becomes perpendicular to initial velocity.

D

if u = 10 m/s and `theta = 30^@`, then velocity never becomes perpendicular to initial velocity during its flight.

Text Solution

Verified by Experts

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

Topper's Solved these Questions

  • KINEMATICS

    MOTION|Exercise EXERCISE 3 SUBJECTIVE PROBLEMS (Level-1)|20 Videos

  • KINEMATICS

    MOTION|Exercise EXERCISE 3 SUBJECTIVE PROBLEMS (Level-2)|15 Videos

  • KINEMATICS

    MOTION|Exercise EXERCISE 2 OBJECTIVE PROBLEMS|75 Videos

  • HYDROSTATIC, FLUID MECHANICS & VISCOSITY

    MOTION|Exercise EXERCISE -3 (SECTION-B) PREVIOUS YEAR PROBLEM|7 Videos

  • KINETIC THEORY OF GASES

    MOTION|Exercise EXERCISE-3 SECTION-B|16 Videos

Similar Questions

Explore conceptually related problems

A particle is projected at an angle 60^@ with horizontal with a speed v = 20 m//s . Taking g = 10m//s^2 . Find the time after which the speed of the particle remains half of its initial speed.

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 particle is projected from ground at an angle theta with horizontal with speed u. The ratio of radius of curvature of its trajectory at point of projection to radius of curvature at maximum height is -

A particle is projected at angle theta with horizontal from ground. The slop (m) of the trajectory of the particle varies with time (t) as

A particle is projected at an angle of theta with the horizontal, with initial speed u .If the magnitude of velocity of projectile motion and time are related as v^(2)-100t^(2)+400t-800=0 . Then which of the following is/are correct. (Take g=10m//s^(2) )

A particle is projected vertically upwards from ground with an initial speed of 57m/s .If acceleration due to gravity is taken to be equal to 10m/ s^(2) ,then the displacement of the particle in the sixth second of its motion will be?

A particle is projected vertically upwards from ground with velocity 10 m // s. Find the time taken by it to reach at the highest point ?

A particle is projected from horizontal ground at angle 'theta' with speed 'u'. In same plane of motion a horizontal acceleration 'a' exists so that projected particle returns back to point of projection. Find time of flight.

A particle is projected from the ground with speed u at angle 60^@ from horizontal. It collides with a second particle of same mass moving with horizontal speed u in same direction at highest point of its trajectory. If collision is perfectly inelastic then find horizontal distance travelled by them after collision when they reached at ground

A particle is projected from a point on the ground surface at different angles keeping the speed of projection as constant range obtained is plotted as function of the angle of projection with the horizontal 'O'. Find the range obtained if particle is projected at angle 30° with the horizontal : 2 g 10 m/s 250m R

MOTION-KINEMATICS-EXERCISE 2 OBJECTIVE PROBLEMS (Level-2)
  1. Which of the following statements are true for a moving body?

    Text Solution

    |

  2. The figure shows the velocity (v) of a particle plotted against time (...

    Text Solution

    |

  3. Pick the correct statements:

    Text Solution

    |

  4. If the velocity of the particle is given by v=sqrt(x) and initially pa...

    Text Solution

    |

  5. A particle moves with an initial velocity v(0) and retardation alpha v...

    Text Solution

    |

  6. A projectile of mass 1kg is projected with a velocity of sqrt(20)m//s ...

    Text Solution

    |

  7. Choose the correct alternative (s)

    Text Solution

    |

  8. If T is the total time of flight, h is the maximum height and R is the...

    Text Solution

    |

  9. A particle moves in the xy plane with a constant acceleration 'g' in t...

    Text Solution

    |

  10. A ball is rolled off along the edge of a horizontal table with velocit...

    Text Solution

    |

  11. A particle is projected at an angle theta from ground with speed u (g ...

    Text Solution

    |

  12. A particle is projected vertically upward with velocity u from a point...

    Text Solution

    |

  13. A block is thrown with a velocity of 2m//s^(-1) (relative to ground) o...

    Text Solution

    |

  14. A particle moves with constant speed v along a regular hexagon ABCDEF ...

    Text Solution

    |

  15. A man on a rectilinearly moving cart, facing the direction of motion, ...

    Text Solution

    |

  16. Two swimmers A and B start swimming from different positions on the sa...

    Text Solution

    |

  17. A man who can swim at a speed v relative to the water wants to cross a...

    Text Solution

    |

  18. A projectile is projected with a speed of 40m/s at a angle theta with ...

    Text Solution

    |

  19. Path of three projectiles are shown. If T(1),T(2) and T(3) are time o...

    Text Solution

    |

  20. From an inclined palne two particles P,Q are projected with same speed...

    Text Solution

    |