For two vectors A → and B → , | A → + B → | = | A → - B → | is always true when

When either | A → | or | B → | is zero.

| A → | = | B → | ≠ 0 and A → and B → are parallel or antiparallel

E M B I B E

NCERT Exemplar Physics - Class 11>Chapter 4 - Motion in a Plane>MCQ-II>Q 4.14

EASY

11th CBSE

IMPORTANT

Earn 100

For a particle performing uniform circular motion, choose the correct statement(s) from the following:

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Important Questions on Motion in a Plane

EASY

11th CBSE

IMPORTANT

NCERT Exemplar Physics - Class 11>Chapter 4 - Motion in a Plane>MCQ-II>Q 4.15

For two vectors

\vec{A}

and

\vec{B}, | \vec{A} + \vec{B} | = | \vec{A} - \vec{B} |

is always true when

EASY

11th CBSE

IMPORTANT

NCERT Exemplar Physics - Class 11>Chapter 4 - Motion in a Plane>VSA>Q 4.16

A cyclist starts from centre $O$ of a circular park of radius $1 Km$ and moves along the path OPRQO as shown in the figure. If he maintains the constant speed of $10 {ms}^{- 1}$ ,what is his acceleration at point $R$ in magnitude and direction?

Question Image

.

EASY

11th CBSE

IMPORTANT

NCERT Exemplar Physics - Class 11>Chapter 4 - Motion in a Plane>VSA>Q 4.17

Question Image A particle is projected in the air at some angle to the horizontal, moves along the parabola as shown in the figure, where $x$ and $y$ indicate horizontal and vertical directions respectively. Show in the diagram, direction of velocity and acceleration at points $A, B$ and $C$ .