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If a particle moves from the point P2, 3, 5 to the point Q3, 4, 5, its displacement vector be

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Important Questions on Kinematics

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Consider the vectors A=i^+j^-k^B=2i^-j^+k^ and C=15i^-2j^+2k^. What is the value of C·A×B?
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Given, A=3i^+2j^ and B=i^+j^. The component of vector A along vector B is
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If a and b are two vectors, then the value of a+b×a-b is,
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If V1+V2=V1-V2 and V2 is finite, then,
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Force F applied on a body is written as F=(n^×F^)·n^+G, where n^ is a unit vector. The vector G is equal to
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Five equal forces of 10 N each are applied at one point and all are lying in one plane. If the angles between them are equal, the resultant force will be
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A shell is fired from a fixed artillery gun with an initial speed u such that it hits the target on the ground at a distance R from it. If t1 and t2 are the values of the time taken by it to hit the target in two possible ways, the product t1t2 is:
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Two guns A and B can fire bullets at speeds 1 km s-1 and 2 km s-1 respectively. From a point on a horizontal ground, they are fired in all possible directions. The ratio of maximum areas covered by the bullets fired by the two guns, on the ground is: