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Which of the following is/are true:

A.


1.) A particle moving towards east may have acceleration acting towards north.

B.



2.) A boy is moving towards left with a speed of 8 m/s and a man is moving with a speed of 13 m/s in same direction. The relative velocity of the boy w.r.t. man is 5 m/s left.

C.



3.) It is possible that the average velocity of the body is zero but the average speed is not zero.


A.
True
B. FALSE
C.
True
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#6 {main}</pre> which of the following statements are correct:

A.

i) All straight A with rightwards arrow on top plus straight B with rightwards arrow on top plus straight C with rightwards arrow on top space and space straight D with rightwards arrow on top must be null vectors.

B.

ii) Magnitude of straight A with rightwards arrow on top plus straight B with rightwards arrow on top is equal to magnitude of straight C with rightwards arrow on top plus straight D with rightwards arrow on top.

C.

iii) Magnitude of <pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array)
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#6 {main}</pre> can never be greater than the sum of the magnitudes of straight B with rightwards arrow on top plus straight C with rightwards arrow on top space and space straight D with rightwards arrow on top.

D.

iv) All the four vectors must be coplanar.


A. FALSE
B. TRUE
C. TRUE
D. FALSE
144 Views

Which of the following is true/ false about a packet dropped from the aeroplane?

A.

It will follow a parabolic path w.r.t. observer on the ground.

B.

It hits the ground vertically below the point from where it is dropped.

C.

It falls with acceleration equal to acceleration due to gravity.

A. TRUE
B. FALSE
C. TRUE
114 Views

Which of the following statements are true/false?

A.

Magnitude of vector is always scalar.

B.

Resultant of two vectors always lies between sum and difference of magnitude of two vectors.

C.

Components of vector are vectors.

D.

Average speed is always equal to magnitude of average velocity.

E.

Three unequal vectors not lying in the same plane can have zero resultant.

F.

Cross product of two parallel vectors is zero.


A. TRUE
B. TRUE
C. TRUE
D. FALSE
E. FALSE
F. TRUE
310 Views

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