A truck travelling due north at 20 m/s turns west and travels at the same speed. The change in its velocity be [UPSEAT 1999]

If assertion is true but reason is false.

A truck travelling due north at 20 m/s turns west and travels at the s

1.	A truck travelling due north at 20 m/s turns west and travels at the same speed. The change in its velocity be [UPSEAT 1999]
A.	40 m/s N?W
B.	\[20\sqrt{2}\,\]m/s N?W
C.	If assertion is true but reason is false.
D.	\[20\sqrt{2}\] m/s S?W
Answer» E.

Discussion

No Comment Found

Related MCQs

If a particle moves from point P (2, 3, 5) to point Q (3,4,5). Its displacement vector be
The component of vector \[A=2\hat{i}+3\hat{j}\]along the vector \[\hat{i}+\hat{j}\]is [KCET 1997]
Find the resultant of three vectors \[\overrightarrow{OA},\,\overrightarrow{OB}\] and \[\overrightarrow{OC}\] shown in the following figure. Radius of the circle is R.
A force \[\overrightarrow{F}=-K(y\hat{i}+x\hat{j})\] (where K is a positive constant) acts on a particle moving in the x-y plane. Starting from the origin, the particle is taken along the positive x- axis to the point (a, 0) and then parallel to the y-axis to the point (a, a). The total work done by the forces \[\overrightarrow{F}\] on the particle is [IIT-JEE 1998]
If a vector \[\overrightarrow{P}\] making angles a, b, and g respectively with the X, Y and Z axes respectively. Then \[{{\sin }^{2}}\alpha +{{\sin }^{2}}\beta +{{\sin }^{2}}\gamma =\]
Assertion : Minimum number of non-equal vectors in a plane required to give zero resultant is three. Reason : If \[\vec{A}+\vec{B}+\vec{C}=\vec{0},\]then they must lie in one plane
Assertion : A null vector is a vector whose magnitude is zero and direction is arbitrary. Reason : A null vector does not exist.
Assertion : \[\vec{A}\times \vec{B}\] is perpendicular to both \[\vec{A}+\vec{B}\] as well as \[\vec{A}-\vec{B}.\] Reason : \[\vec{A}+\vec{B}\] as well as \[\vec{A}-\vec{B}\] lie in the plane containing \[\vec{A}\] and \[\vec{B}\], but \[\vec{A}\times \vec{B}\] lies perpendicular to the plane containing \[\vec{A}\] and \[\vec{B}.\]
For the resultant of the two vectors to be maximum, what must be the angle between them
Two forces of 12 N and 8 N act upon a body. The resultant force on the body has maximum value of [Manipal 2003]

A truck travelling due north at 20 m/s turns west and travels at the same speed. The change in its velocity be [UPSEAT 1999]

Discussion

No Comment Found

Related MCQs

Reply to Comment