Home
Class 12
PHYSICS
An object moves at constant speed along ...

An object moves at constant speed along a cicular path in a horizontal xy plane. With the centre as origin.when the object is at x= -2m , it s velocity is ` -4hatj`m/s , its acceleration when it is at y= 2 m/s

A

` -8 hati m//s^(2)`

B

`-2hatj m//s`

C

`-8 hatj m//s^(2) `

D

`2 hatj m//s^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A PLANE

    AAKASH INSTITUTE|Exercise Assignement section -C Objective (More than one option is correct)|5 Videos

  • MOTION IN A PLANE

    AAKASH INSTITUTE|Exercise Assignement section -D (Linked Comprehension)|8 Videos

  • MOTION IN A PLANE

    AAKASH INSTITUTE|Exercise Assignement section -A Objective (one option is correct)|50 Videos

  • MOCK_TEST_17

    AAKASH INSTITUTE|Exercise Example|15 Videos

  • MOTION IN A STRAIGHT LINE

    AAKASH INSTITUTE|Exercise ASSIGNMENT (SECTION - D)|15 Videos

Similar Questions

Explore conceptually related problems

An object moves at a constant speed along a circular path in a horizontal XY plane, with the center at the origin. When the object is at x=-2m , its velocity is -(4m//s)hatj . What is the object's acceleration when it is y=2m

An object moves on a circular path such that the distance covered is given by S= (0.5t^(2)+2t) m ,here t is time in s. If radius of circle is 4m ,then initial acceleration of object is?

A car moves along a straight path with variable velocity as shown in the figure. When the car is at possiting A, its velocity is 10 m s^(-1) and when it is at position B, its velocity is 20 m s^(-1) . If the car takes 5 seconds of time to move from A to B, find the acceleration of the car.

The velocity of an object is given by vecv = ( 6 t^(3) hati + t^(2) hatj) m//s) . Find the acceleration at t = 2s.

A car is moving in a circular path of radius 500m with a speed of 30 m//s . If the speed is increased at the rate of 2 m//s^(2) , the resultant acceleration will be .

An object moves 10 m in 4 s then turns left and moves 20 m in next 5 s. What is the average speed of the object?

An electron moves along a circular path of radius 10 cm. If the centripetal acceleration is 4xx10^(11) m//s^(2) , then its linear speed is

A particle of m=2kg is moving with constant speed 15m/s along a curved path y=x^(2) . Find its angular momentum about origin 0 when its velocity vector is at 53^(@) with x -axis (in kgm^(2)/s)

Knowledge Check

  • An object moves at a constant speed along a circular path in a horizontal XY plane, with the center at the origin. When the object is at x=-2m , its velocity is -(4m//s)hatj . What is the object's acceleration when it is y=2m

    A
    `-(8m//s^(2))vecj`
    B
    `-(8m//s^(2))veci`
    C
    `-(4m//s^(2))vecj`
    D
    `-(4m//s^(2))veci`

  • A car is moving in a circular path of radius 500m with a speed of 30 m//s . If the speed is increased at the rate of 2 m//s^(2) , the resultant acceleration will be .

    A
    `2 m//s^(2)`
    B
    `2.5 m//s^(2)`
    C
    `2.7 m//s^(2)`
    D
    `4 m//s^(2)`

  • An object moves 10 m in 4 s then turns left and moves 20 m in next 5 s. What is the average speed of the object?

    A
    `10 m/s`
    B
    `(10)/3 m/s`
    C
    `(20)/3 m/s`
    D
    `4.5 m/s`
    • AAKASH INSTITUTE-MOTION IN A PLANE-Assignement section -B Objective (one option is correct)
    1. An object moves at constant speed along a cicular path in a horizontal...

      Text Solution

      |

    2. A particle moves on the curve y = x^(2)/4 where x=t/2. x and y a...

      Text Solution

      |

    3. A body is prodected with initial velocity ( 5hati + 12hati) m//s from ...

      Text Solution

      |

    4. A particle moves along the positive branch of the curve y = (x^(2))/(2...

      Text Solution

      |

    5. One second after the projection, a stone moves at an angle of 45^@ wi...

      Text Solution

      |

    6. The horizontal range of a projectile is R and the maximum height attai...

      Text Solution

      |

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

      Text Solution

      |

    8. If the horizontal range of a projectile be a and the maximum height at...

      Text Solution

      |

    9. A grasshopper can jump a maximum horizontal distance of 40cm. If it sp...

      Text Solution

      |

    10. A body is projected horizontally with a speed v(0) find the velocity o...

      Text Solution

      |

    11. A particle is thrown with the speed u at an angle alpha with the horiz...

      Text Solution

      |

    12. A projectile is thrown with an initial velocity (v(x)hati + v(y)hatj) ...

      Text Solution

      |

    13. A particle is projected with a velocity of 30 m/s at an angle theta...

      Text Solution

      |

    14. A projectile has same range for two angules of projection. If times of...

      Text Solution

      |

    15. A particle is projected with velocity 50 m/s at an angle 60^(@) with...

      Text Solution

      |

    16. A projectile is fired to have maximum range 500 m. Maximum height atta...

      Text Solution

      |

    17. A particle projected at some angle with velocity 50 m/s crosses a 20 m...

      Text Solution

      |

    18. Two paper screens A and B are separated by a distance of 100m. A bulle...

      Text Solution

      |

    19. A stone is thrown from the top of a tower at an angle of 30^(@) above...

      Text Solution

      |

    20. A level flight olane flying at an altitude of 1024 ft with a speed of ...

      Text Solution

      |