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মেকানিক্যাল ইঞ্জিনিয়ারিং

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রসায়ন

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গণিত

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ME/IPE/MME

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Questions

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1001. MCQPractice set · Question 68

Instantaneous velocity কী?

a.
instant-এ velocity, ds/dt
b.
total distance/total time
c.
force/mass
d.
average speed only

Correct answer: a

Instantaneous velocity v=dx/dt বা ds/dt, ক্ষুদ্র time interval-এর limit।

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1002. MCQPractice set · Question 69

Instantaneous speed কী?

a.
instantaneous velocity-এর magnitude
b.
displacement/time সবসময়
c.
acceleration/time
d.
distance zero

Correct answer: a

Speed হলো velocity vector-এর magnitude।

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1003. MCQPractice set · Question 70

Instantaneous acceleration কী?

a.
dv/dt
b.
dx/dt
c.
ds/dt
d.
v/t সবসময়

Correct answer: a

Acceleration a=dv/dt, অর্থাৎ velocity-এর instantaneous rate of change।

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1004. MCQPractice set · Question 71

Position x=3t²+2t হলে velocity কত?

a.
3t+2
b.
6t+2
c.
3t²
d.
6t

Correct answer: b

v=dx/dt=6t+2।

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1005. MCQPractice set · Question 72

Position x=3t²+2t হলে acceleration কত?

a.
3
b.
6
c.
6t+2
d.
2

Correct answer: b

a=dv/dt=d(6t+2)/dt=6 m/s²।

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1006. MCQPractice set · Question 73

Velocity v=4t+3 হলে acceleration কত?

a.
3
b.
4
c.
4t
d.
7

Correct answer: b

a=dv/dt=4।

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1007. MCQPractice set · Question 74

Velocity v=5t² হলে acceleration কত?

a.
5t
b.
10t
c.
25t
d.
5t²

Correct answer: b

a=dv/dt=10t।

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1008. MCQPractice set · Question 75

Position x=t³ হলে t=2 s-এ velocity কত?

a.
4 m/s
b.
8 m/s
c.
12 m/s
d.
16 m/s

Correct answer: c

v=3t²; t=2 হলে v=12 m/s।

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1009. MCQPractice set · Question 76

Position x=t³ হলে t=2 s-এ acceleration কত?

a.
6 m/s²
b.
12 m/s²
c.
24 m/s²
d.
8 m/s²

Correct answer: b

a=6t; t=2 হলে a=12 m/s²।

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1010. MCQPractice set · Question 77

Acceleration zero হলে velocity-time graph কেমন?

a.
horizontal
b.
vertical
c.
parabola
d.
circle

Correct answer: a

a=dv/dt=0 মানে velocity constant, তাই graph horizontal।

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