Home
Class 11
PHYSICS
The position of an object movinfg along ...

The position of an object movinfg along X-axis is given by `x = a + bt^2` where a = 8.5 m and b = 2.5 m and t is measured in second. If the object starts from t = 0, the velocity at t = 2s is

A

18.5 `m//s`

B

10 `m//s`

C

9.25 `m//s`

D

1.5 `m//s`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MECHANICAL PROPERTIES OF SOLIDS

    CHETANA PUBLICATION|Exercise EXERCISE|137 Videos

  • OPTICS

    CHETANA PUBLICATION|Exercise EXERCISE|80 Videos

Similar Questions

Explore conceptually related problems

The position of an object moving along x-axis is given by x = a + bt^2 where a = 8.5 m and b=2.5 m and t=0 is measured in second. If the object starts from t = 0 (the velocity at t=2s is

The position of an object moving along the x axis is given by x = a + bt^2 where a = 8.5 and b= 2.5 m s^2 and t is measured in second. What is the velociity at t=0 s and t= 2s? What is the average velocity between t= 2 s and t=4s?

A force F is given by F = at + bt^(2) , where t is time . What are the dimensions of a and b ?

IF the equation for the displancement of a particle moving on a circular path is given by theta=2t^3+0.5 , where theta is in radius and t is in seconds, then the angular velocity of the particle at t=2 s is

The velocity of an object moving in straight line path is given as a function of time by v = 6t - 3t^2 , where v is in ms^-1 , t is in s. The average velocity of the object between t=0 and t=2 second is

If x = at + bt^(2) where x is in meter (m) and t is in hour (hr) then unit of b will be .

The displacement of a particle along the x-axis is given by x = a sin^(2) omega t . The motion of the particle corresponds to

Position of a particle at any instant t is given by vec r=3t hat i + 2t^2 haij + 5 hat k . Its velocity at same instant will be

The horizontal distance x and the vertical height y of a projectile at a time t are given by x=at and y=bt^2 +ct where a, b and c are constants The magnitude of the velocity of the projectile 1 second after it is fired is

A wave equation which gives the displacement along y-direction is given by y = 0.001 sin (100t + x) where x and y ane in meter and t is time in second. This represented a wave

CHETANA PUBLICATION-MOTION IN A PLANE-EXERCISE
  1. A bus travel its onward journey with a constant speed of 30km//hr and ...

    Text Solution

    |

  2. A particle oscillates along a straight line 1m long, if it completes o...

    Text Solution

    |

  3. The position of an object movinfg along X-axis is given by x = a + bt^...

    Text Solution

    |

  4. A car accelerates on a straight road from rest to a speed of 180 km//h...

    Text Solution

    |

  5. A body has initial velocity of 3 m//s and has an acceleration of 2 m//...

    Text Solution

    |

  6. An electron travelling with a speed of 5 xx 10^3m/s passes through an ...

    Text Solution

    |

  7. A stone is thrown vertically upwards with initial velocity of 14 m s^-...

    Text Solution

    |

  8. A swimmer's speed in the direction of flow of rivers is 16 km h^-1. Th...

    Text Solution

    |

  9. Figures shows the displacement-time graph of a particle moving along x...

    Text Solution

    |

  10. Area under the curved of velocity-time graph of a particle moving with...

    Text Solution

    |

  11. The v-t graph of an athelets is shown below. The distance travelled by...

    Text Solution

    |

  12. The v-t graph below represents

    Text Solution

    |

  13. The velocity-time graph of a body is shown in the following graph. At ...

    Text Solution

    |

  14. The two dimensional motion of a body in which a vertical motion with c...

    Text Solution

    |

  15. Whic of the following is NOT an example of a projectile?

    Text Solution

    |

  16. In a projectile motion, the velocity vector of the projectile is

    Text Solution

    |

  17. The trajectory of particle is symmetrical about the perpendicular dra...

    Text Solution

    |

  18. A shell is fired at an angle of 30^@ to the horizontal with velocity 1...

    Text Solution

    |

  19. A projectile can have the same range R for two angles of projection. I...

    Text Solution

    |

  20. When a body is projected vertically up from the ground, its velocity i...

    Text Solution

    |