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ইন্ডাস্ট্রিয়াল এন্ড প্রোডাকশন ইঞ্জিনিয়ারিং

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981. MCQPractice set · Question 48

Velocity-time graph-এর positive slope কী বোঝায়?

a.
positive acceleration
b.
zero acceleration
c.
negative displacement সবসময়
d.
rest

Correct answer: a

v-t slope acceleration; positive slope মানে positive acceleration।

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982. MCQPractice set · Question 49

Velocity-time graph-এর negative slope কী বোঝায়?

a.
negative acceleration
b.
positive speed সবসময়
c.
zero motion
d.
constant position

Correct answer: a

Negative slope মানে velocity সময়ের সঙ্গে কমছে বা negative acceleration।

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983. MCQPractice set · Question 50

Acceleration-time graph-এর area কী দেয়?

a.
change in velocity
b.
displacement
c.
distance
d.
position

Correct answer: a

Area=acceleration×time=velocity-এর পরিবর্তন।

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984. MCQPractice set · Question 51

Velocity-time graph-এর নিচে negative area হলে কী বোঝায়?

a.
negative displacement contribution
b.
distance always negative
c.
acceleration zero
d.
mass negative

Correct answer: a

Velocity negative হলে signed area displacement-এ negative contribution দেয়।

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985. MCQPractice set · Question 52

Uniform acceleration-এর v-t graph কেমন?

a.
straight line
b.
circle
c.
horizontal position graph only
d.
random curve

Correct answer: a

v=u+at linear relation, তাই v-t graph straight line।

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986. MCQPractice set · Question 53

Uniform acceleration-এর s-t graph কেমন?

a.
parabola
b.
straight line সবসময়
c.
circle
d.
horizontal সবসময়

Correct answer: a

s=ut+½at² quadratic, তাই s-t graph parabola।

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987. MCQPractice set · Question 54

Uniform velocity-এর s-t graph কেমন?

a.
straight line
b.
parabola
c.
circle
d.
hyperbola সবসময়

Correct answer: a

s=s₀+vt linear, তাই straight line।

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988. MCQPractice set · Question 55

Uniform acceleration-এ displacement-এর time dependence কী?

a.
linear only
b.
quadratic
c.
constant always
d.
inverse time

Correct answer: b

s=ut+½at²-এ t² term আছে, তাই quadratic dependence।

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989. MCQPractice set · Question 56

u=0 এবং a=4 m/s² হলে 3 s পরে velocity কত?

a.
4 m/s
b.
7 m/s
c.
12 m/s
d.
36 m/s

Correct answer: c

v=at=4×3=12 m/s।

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990. MCQPractice set · Question 57

u=0 এবং a=4 m/s² হলে 3 s-এ displacement কত?

a.
6 m
b.
12 m
c.
18 m
d.
36 m

Correct answer: c

s=½×4×3²=18 m।

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