Home
Class 11
PHYSICS
A particle has an initial velocity 3 \ha...

A particle has an initial velocity `3 \hat { i } + 4 \hat { j }` and an acceleration of `0.4 \hat { i } + 0.3 \hat { j }`. It's speed after 10s is

A

7 units

B

`7sqrt2 units`

C

8.5 units

D

10 units

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • BULK MATTER

    SARAS PUBLICATION|Exercise EXAMPLE|43 Videos

  • KINEMATICS

    SARAS PUBLICATION|Exercise EXAMPLE|23 Videos

Similar Questions

Explore conceptually related problems

A particle has an initial velocity 2 \hat { \i } + 3 \hat { \j } and acceleration 0.3 \hat { \i } + 0.2 \hat { \j } . The magnitude of velocity after 10 seconds will be:

If \vec { A } = 12 \hat { i } + 14 \hat { j } and \vec { B } = 10 \hat { i } + 8 \hat { j } . Then find | \vec { A } \- \vec { B } |

If \vec { A } = 8 \hat { i } + 6 \hat { j } and \vec { B } = 4 \hat { \i } + 2 \hat { j } . Then find | \vec { A } + \vec { B } |

If the vector 8 hat i + a hat j of magnitude 10 is in the direction of the vector 4 hat i - 3 hat j , then the value of a is equal to

Find the angle between the vectors vec a = 3 hat i +4 hat j + hat k and vec b = 2 hat i +3 hat j - hat k

Find the values of x and y so that the vectors 4 hat i + 5 hat j and x hat i + y hat j are equal.

Find the angle between the vectors hat i - 2 hat j + 3 hat k and 3 hat i - 2 hat j + hat k .

Show that the vectors 2 hat i + 3 hat j + 4 hat k and 4 hat i + 6 hat j + 8 hat k are collinear.

Find the angle between the vectors vec a = 3 hat i + 4 hat j + hat k vec b = 2 hat i + 3 hat j - hat k .

Find the projection of the vector hat i + 3 hat j + 7 hat k on the vector 7 hat i - hat j + 8 hat k .

SARAS PUBLICATION-GRAVITATION-EXAMPLE
  1. A shell of mass 200 gm is ejected from a gun of mass 4 kg by an explos...

    Text Solution

    |

  2. A body of mass 1 kg is thrown upwards with a velocity 20 ms^(-1). It m...

    Text Solution

    |

  3. A particle has an initial velocity 3 \hat { i } + 4 \hat { j } and an ...

    Text Solution

    |

  4. A particle moves a distance x in time t according to equation x=(t+5)^...

    Text Solution

    |

  5. A man of 50 kg mass is standing in a gravity free space at a height of...

    Text Solution

    |

  6. A person of mass 60 kg is inside a lift of mass 940kg and presses the ...

    Text Solution

    |

  7. A body projected electrically from the earth reaches a height equal to...

    Text Solution

    |

  8. A particle moves in a circle of radius 5 cm with constant speed and ti...

    Text Solution

    |

  9. A planet moving along an elliptical orbit is closest to the Sun at dis...

    Text Solution

    |

  10. A body is moving with velocity 30m//s towards east .After 10 seconds i...

    Text Solution

    |

  11. The height at which the weight of a body becomes 1//16 th its weight o...

    Text Solution

    |

  12. A geostationary satellite is orbiting the earth at a height of 5R abov...

    Text Solution

    |

  13. A spherical planet has a mass M(p) and diameter D(p). A particle of ma...

    Text Solution

    |

  14. When a biconvex lens of glass having refractive index 1.47 is dipped i...

    Text Solution

    |

  15. An infinite number of bodies, each of mass 2 kg, are situated on at di...

    Text Solution

    |

  16. Calculate the ratio of radii of gyration of a circular ring and dise o...

    Text Solution

    |

  17. A planet has the radius twice that of earth and has same density as th...

    Text Solution

    |

  18. A particle of mass 'm' is kept at rest at a height 3R from the surface...

    Text Solution

    |

  19. The ratio of the acceleration for a solid sphere (mass m and radius R)...

    Text Solution

    |

  20. Dependence of intensity of gravitational field (E) of earth with dista...

    Text Solution

    |