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Question (11)

QN0034961

A ball is projected with a velocity, , at an angle of with the vertical direction. Its speed at the highest point of its trajectory will be:

(A)
(B)
(C)
(D)
Zero

Correct Answer: A

Explanation:

as there is zero acceleration along horizontal direction, at highest point we will have same horizontal velocity also there is no vertical velocity at highest point.

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Question (12)

QN0034962

The angular speed on a fly wheel moving with uniform angular acceleration changes from to in 16 seconds. The angular acceleration in is:

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

Angular acceleration,

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Question (13)

QN0034963

A bullet is fired from a gun at the speed of in the direction above the horizontal. The maximum height attained by the bullet is

(A)
(B)
(C)
(D)

Correct Answer: C

Explanation:

Maximum height,

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