The x component of velocity is 5 2 \sqrt{2} 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> km/h and the actual velocity is 10 km/hr then its y component (in km/h) is:

5 2 \sqrt{2} 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

2 10 \sqrt{10} 1 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

2 15 \sqrt{15} 1 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

MOTION IN PLANE Quiz: 10 Practice Questions (Grade 11)

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The value of (i-j).(2i-j+k) is:

-3

+3

0

2

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

If the dot product of two vectors is 0 then the angle between them (in degrees) will be:

0

180

60

90

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The magnitude of vector i-j-k is

-1

+1

$\sqrt{3}$

none of these

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The x component of velocity is 5 $\sqrt{2}$ km/h and the actual velocity is 10 km/hr then its y component (in km/h) is:

5 $\sqrt{2}$

10

2 $\sqrt{10}$

2 $\sqrt{15}$

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The angle betweeen the vectors (i+j) and (-i+j) (in degrees) is:

0

45

90

180

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The value of x, so that xi+0.4j+0.8k is a unit vector is:

1

$\sqrt{2}$

-0.2

$\sqrt{0.2}$

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A vector when added to 2i-j+k and -i-j+k gives null vector. The vector is:

i-2j+2k

-i+2j-2k

2i-2j+2k

2i-j+2k

9.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Choose the incorrect option:

$\overrightarrow{A}$ . $\overrightarrow{B}$ = $\overrightarrow{B}$ . $\overrightarrow{A}$

i.j=0

k.k=0

j.j=1

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