MCQ Collection
NAT MCQs
Practice NAT questions with answers and explanations.
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Correct Answer: D. 20 N
Explanation:
Newton's second law gives F=ma.
F=5×4 = 20 N.
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Correct Answer: A. 5 m/s²
Explanation:
Acceleration is net force divided by mass.
A=30/6 = 5 m/s².
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Correct Answer: B. 70 N
Explanation:
Weight is W=mg.
W=7×10 = 70 N.
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Correct Answer: C. 100 N
Explanation:
Vertical equilibrium requires normal force to balance weight.
N=mg=10×10 = 100 N.
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Correct Answer: B. 12 m/s
Explanation:
Use v=u+at with u=0.
V=0+3×4 = 12 m/s.
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Correct Answer: C. 17 m/s
Explanation:
Use v=u+at.
V=5+2×6 = 17 m/s.
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Correct Answer: D. -5 m/s²
Explanation:
Acceleration is change in velocity divided by time.
(5-20)/3 = -5 m/s².
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Correct Answer: A. 25 m
Explanation:
Use s=ut+½at² with u=0.
S=½×2×25 = 25 m.
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Correct Answer: B. 75 m
Explanation:
Use s=ut+½at².
S=10×5+½×2×25 = 50+25 = 75 m.
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Correct Answer: C. The contact force perpendicular to a surface
Explanation:
A surface exerts a normal force on an object in contact with it.
Its magnitude is not always equal to weight.
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Correct Answer: D. A force opposing relative motion or tendency of motion between surfaces
Explanation:
Friction acts tangentially at a contact surface.
It may be static or kinetic.
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Correct Answer: A. Constant speed reached when drag balances the driving force
Explanation:
At terminal velocity, net force is zero.
The object then moves with constant velocity.
