Home
Class 11
PHYSICS
A particle has an initial velocity 2 \ha...

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:

A

9`\sqrt { 2 }` units

B

5`\sqrt { 2 }` units

C

5 units

D

9 units

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

    PREMIERS PUBLISHERS|Exercise Textbook questions & answers (III. Long answer questions).|16 Videos

  • KINEMATICS

    PREMIERS PUBLISHERS|Exercise Textbook questions & answers (IV. Numerical problems).|48 Videos

  • KINEMATICS

    PREMIERS PUBLISHERS|Exercise Other important questions & answers (V. Numerical problems).|166 Videos

  • GRAVITATION

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTION & ANSWERS (CONCEPTUAL QUESTIONS)|34 Videos

  • KINETIC THEORY OF GASES

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (VI. Conceptual Questions.)|8 Videos

Similar Questions

Explore conceptually related problems

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

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

Find |vec a xx vec b| if vec a = 2 hat i - hat j + 3 hat k and vec b = 3 hat i - 5 hat j + 2 hat k .

Find veca. vec b when veca = 2 hat i + 2 hat j - hat k and vec b = 6 hat i - 3 hat j + 2 hat k .

Show that the vectors 2 hat i - 3 hat j + hat k , - 4hati - hat j + 3 hat k and -2 hat i - 4hatj + 4 hat k are coplanar.

If vec a = hat i + 2 hat j - 3 hat k and vec b = 3 hat i - hat j + 2 hat k , then vec a + vec b and vec a - vec b are

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 .

Show that the points with position vectors 2 hat i + 6 hat j + 3 hat k , hat i + 2 hat j + 7 hat k and 3 hat i + 10 hat j - hat k are collinear.

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

PREMIERS PUBLISHERS-KINEMATICS -Textbook questions & answers (II. Short answer questions).
  1. Define a vector. Give examples.

    Text Solution

    |

  2. Define a scalar. Give examples

    Text Solution

    |

  3. A particle has an initial velocity 2 \hat { \i } + 3 \hat { \j } and a...

    Text Solution

    |

  4. Write a short note on vector product between two vectors.

    Text Solution

    |

  5. How do you deduce that two vectors are perpendicular?

    Text Solution

    |

  6. Define displacement and distance.

    Text Solution

    |

  7. A bird flies for 4s with a velocity of |t-2| m/s in a straight line, w...

    Text Solution

    |

  8. A body starts from rest with constant acceleration. What is the ratio ...

    Text Solution

    |

  9. A balloon starts rising from the ground with an acceleration of 1.25 m...

    Text Solution

    |

  10. A car covers a distance of 80 km at a speed of 60 km/hr and another 14...

    Text Solution

    |

  11. A boy can throw a stone up to a maximum height of 10 m. The maximum ho...

    Text Solution

    |

  12. If \vec { A } = 4 \hat { \i } - 3 \hat { j } and \vec { B } = 6 \hat {...

    Text Solution

    |

  13. A balloon starts rising from the ground with a constant acceleration o...

    Text Solution

    |

  14. Write down the expression for angle made by resultant acceleration and...

    Text Solution

    |

  15. What is meant by Cartesian coordinate system?

    Text Solution

    |

  16. Define a vector. Give examples.

    Text Solution

    |

  17. Define a scalar. Give examples

    Text Solution

    |

  18. Write a short note on the scalar product between two vectors.

    Text Solution

    |

  19. Write a short note on vector product between two vectors.

    Text Solution

    |

  20. How do you deduce that two vectors are perpendicular?

    Text Solution

    |