WorksheetsMOTION IN PLANE
Total questions: 10
Worksheet time: 4mins
The value of (i-j).(2i-j+k) is:
-3
+3
0
2
If the dot product of two vectors is 0 then the angle between them (in degrees) will be:
0
180
60
90
The magnitude of vector i-j-k is
-1
+1
3
none of these
The x component of velocity is 5 2 km/h and the actual velocity is 10 km/hr then its y component (in km/h) is:
5 2
10
2 10
2 15
The angle betweeen the vectors (i+j) and (-i+j) (in degrees) is:
0
45
90
180
The value of x, so that xi+0.4j+0.8k is a unit vector is:
1
2
-0.2
0.2
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
The angle made by a vector i+j with y axis is:
00
450
600
900
Choose the incorrect option:
A . B = B . A
i.j=0
k.k=0
j.j=1
The angle between two equal vectors so that there resultant is equal in magnitude of either,will be:
450
600
900
1200
