Read important Physics MCQS For Exam.These physics General Knowledge Mcqs Contain of World Geography, Atmosphere, Science & Literature, events Mcqs, Current Affairs Mcqs , Pakistan Affairs Mcqs and International Organizations. These general knowledge questions are very important for all type of exams conducted by Fpsc, Nts, Kppsc, Ppsc, Spsc, Bpsc, Ots, Uts, Pts, Cts, Ats, etea and other testing agencies of Pakistan
Note: The bold option is the right answer for the given MCQ’S:
1.Which of these particles is speeding up for t > 0?
A. All four
B. Only 1
C. Only 2 and 3
D. Only 2, 3, and 4
E. None of them
2. An object starts from rest at the origin and moves along the x axis with a constant acceleration
of 4 m/s. Its average velocity as it goes from x = 2 m to x = 8 m is:
A. 1 m/s
B. 2 m/s
C. 3 m/s
D. 5 m/s
E. 6 m/s
3. Of the following situations, which one is impossible?
A. A body having velocity east and acceleration east
B. A body having velocity east and acceleration west
C. A body having zero velocity and non-zero acceleration
D. A body having constant acceleration and variable velocity
E. A body having constant velocity and variable acceleration
4. Throughout a time interval, while the speed of a particle increases as it moves along the x axis,
its velocity and acceleration might be:
A. positive and negative, respectively
B. negative and positive, respectively
C. negative and negative, respectively
D. negative and zero, respectively
E. positive and zero, respectively
5. A particle moves on the x axis. When its acceleration is positive and increasing:
A. its velocity must be positive
B. its velocity must be negative
C. it must be slowing down
D. it must be speeding up
E. none of the above must be true
6. The position y of a particle moving along the y axis depends on the time t according to the
equation y = at − bt2. The dimensions of the quantities a and b are respectively:
A. L2/T, L3/T2
B. L/T2, L2/T
C. L/T, L/T2
D. L3/T, T2/L
E. none of these
7. A particle moves along the x axis according to the equation x = 6t
2, where x is in meters and
t is in seconds. Therefore:
A. the acceleration of the particle is 6 m/s2
B. t cannot be negative
C. the particle follows a parabolic path
D. each second the velocity of the particle changes by 9.8 m/s
E. none of the above
8. Over a short interval near time t = 0 the coordinate of an automobile in meters is given by
x(t) = 27t − 4.0t
3, where t is in seconds. At the end of 1.0 s the acceleration of the auto is:
A. 27 m/s2
B. 4.0 m/s2
C. −4.0 m/s2
D. −12 m/s2
E. −24 m/s2
9. Over a short interval, starting at time t = 0, the coordinate of an automobile in meters is given
by x(t) = 27t − 4.0t
3, where t is in seconds. The magnitudes of the initial (at t = 0) velocity
and acceleration of the auto respectively are:
A. 0; 12 m/s2
B. 0; 24 m/s2
C. 27 m/s; 0
D. 27 m/s; 12 m/s2
E. 27 m/s; 24 m/s2
10. At time t = 0 a car has a velocity of 16 m/s. It slows down with an acceleration given by
−0.50t, in m/s2 for t in seconds. It stops at t =
A. 64 s
B. 32 s
C. 16 s
D. 8.0 s
E. 4.0 s
11. At time t = 0 a car has a velocity of 16 m/s. It slows down with an acceleration given by
−0.50t, in m/s2 for t in seconds. At the end of 4.0 s it has traveled:
A. 0
B. 12 m
C. 14 m
D. 25 m
E. 59 m
12. At time t = 0 a car has a velocity of 16 m/s. It slows down with an acceleration given by
−0.50t, in m/s2 for t in seconds. By the time it stops it has traveled:
A. 15 m
B. 31 m
C. 62 m
D. 85 m
E. 100 m
13. Starting at time t = 0, an object moves along a straight line with velocity in m/s given by
v(t) = 98 − 2t
2, where t is in seconds. When it momentarily stops its acceleration is:
A. 0
B. −4.0 m/s2
C. −9.8 m/s2
D. −28 m/s2
E. 49 m/s2
14. Starting at time t = 0, an object moves along a straight line. Its coordinate in meters is given
by x(t) = 75t − 1.0t
3, where t is in seconds. When it momentarily stops its acceleration is:
A. 0
B. −73 m/s2
C. −30 m/s2
D. −9.8 m/s2
E. 9.2 × 103 m/s2
15. A car, initially at rest, travels 20 m in 4 s along a straight line with constant acceleration. The
acceleration of the car is:
A. 0.4 m/s
B. 1.3 m/s
C. 2.5 m/s
D. 4.9 m/s
E. 9.8 m/s
16. A racing car traveling with constant acceleration increases its speed from 10 m/s to 50 m/s over
a distance of 60 m. How long does this take?
A. 2.0 s
B. 4.0 s
C. 5.0 s
D. 8.0 s
E. The time cannot be calculated since the speed is not constant
17. A car starts from rest and goes down a slope with a constant acceleration of 5 m/s2. After
5 s the car reaches the bottom of the hill. Its speed at the bottom of the hill, in meters per
second, is:
A. 1
B. 12.5
C. 25
D. 50
E. 160
18. A car moving with an initial velocity of 25 m/s north has a constant acceleration of 3 m/s2
south. After 6 seconds its velocity will be:
A. 7 m/s north
B. 7 m/s south
C. 43 m/s north
D. 20 m/s north
E. 20 m/s south
19. An object with an initial velocity of 12 m/s west experiences a constant acceleration of 4 m/s2
west for 3 seconds. During this time the object travels a distance of:
A. 12 m
B. 24 m
C. 36 m
D. 54 m
E. 144 m
20. How far does a car travel in 6 s if its initial velocity is 2 m/s and its acceleration is 2 m/s2 in
the forward direction?
A. 12 m
B. 14 m
C. 24 m
D. 36 m
E. 48 m
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