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Newton's Laws of Motion and Friction question bank (Physics)

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Q1.

$A$ vehicle without passengers is moving on a frictionless horizontal road with velocity $u$ and can be stopped in a distance $d$. Now,$40\%$ of its weight is added. If the retardation remains the same,what is the stopping distance at velocity $u$?

(A)
$1.6d$
(B)
$1.4d$
(C)
$d$
(D)
$1.2d$
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Q2.

$A$ person with a machine gun can fire $50 \ g$ bullets with a velocity of $240 \ m/s$. $A$ $60 \ kg$ tiger moves towards him with a velocity of $12 \ m/s$. In order to stop the tiger in its track,the number of bullets the person must fire towards the tiger is:

(A)
$50$
(B)
$60$
(C)
$70$
(D)
$80$
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