Physics Worksheets

**Page 2**

11.

The direction of vector $\overrightarrow{\text{PQ}}$ is

a. | southeast | ||

b. | southwest | ||

c. | northwest | ||

d. | northeast |

[From the figure.]

Correct answer : (2)

12.

Which of the following is a vector?

a. | Wind is blowing at 20 kmph, northwards. | ||

b. | A man is traveling in northeast direction. | ||

c. | A girl is running at 10 kmph. | ||

d. | A car travels at 40 kmph |

The velocity of the wind in one of the options is a vector as both its magnitude and direction are given.

Correct answer : (1)

13.

Two vectors are said to be equal if they have the same ...

a. | magnitude | ||

b. | direction and magnitude | ||

c. | direction or magnitude | ||

d. | direction |

Correct answer : (2)

14.

The ordered pair notation of vector $\overrightarrow{\text{OP}}$ is ...

a. | <5, - 10> | ||

b. | <5, 10> | ||

c. | <10, 5> | ||

d. | <-10, - 5> |

The ordered pair notation of vector

Correct answer : (3)

15.

The ordered pair notation of $\overrightarrow{\text{OQ}}$ is [Given $a$ = 63.]

a. | < - 48.2, 40.4> | ||

b. | < - 40.4, 48.2> | ||

c. | <40.4, - 63> | ||

d. | <63, 40.4> |

[Use sine and cosine.]

OM = 63 (cos 50°) and QM= 63 (sin 50°)

[Cross multiply.]

OM

As Q lies in the second quadrant, its

The coordinates of Q are (- 40.4, 48.2)

The ordered pair notation of

Correct answer : (2)

16.

Parallel vectors have same ...

a. | magnitude and direction | ||

b. | direction | ||

c. | magnitude |

Correct answer : (2)

17.

A vector has ...

a. | both magnitude and direction. | ||

b. | finite number of points. | ||

c. | direction. | ||

d. | magnitude. |

Correct answer : (1)

18.

The magnitude of vector $\overrightarrow{\text{AB}}$ is [Given $a$ = 5.]

a. | ± 5 | ||

b. | - 5 | ||

c. | 5 | ||

d. | None of the above |

From the figure, magnitude of vector

Correct answer : (3)

19.

Which of the following vectors has a magnitude of 5 units?

a. | Figure D | ||

b. | Figure B | ||

c. | Figure A | ||

d. | Figure C |

[Use Pythagorean Theorem and simplify.]

The magnitude of

Correct answer : (1)

20.

Which of the following vectors has the same magnitude as <27, 36> ?

a. | <- 27, 36> | ||

b. | <27, - 36> | ||

c. | <- 27, - 36> | ||

d. | All of the above |

Magnitude of <27, 36> =

Magnitude of <27, - 36> =

Magnitude of <- {27], - 36> =

The vectors <27, 36>, < - 27, 36>, <27, - 36>, and < - 27, - 36> have the same magnitude.

Correct answer : (4)