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PPSC Lecturer of Physics Online Test 44 Solved MCQs

Lecturer Physics MCQs / FPSC Lecturer Physics mcqs, measurement, Motion along a straight line, Physics MCQs, Ppsc lecturer Physics, ppsc past papers of Physics, ppsc Physics MCQs, Vectors

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Test Instructions:-
Test Name	Lecturer Physics
Subject	Physics Test 44
Test Type	MCQs
Total Questions	25
Total Time	20 Minutes
Total Marks	100

You have 20 minutes to pass to the quiz.

PPSC LECTURER OF PHYSICS TEST NO. 44

1 / 25

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?

48 m

24 m

36 m

14 m

12 m

2 / 25

A particle moves on the x axis. When its acceleration is positive and increasing:

none of the above must be true

it must be slowing down

it must be speeding up

its velocity must be positive

its velocity must be negative

3 / 25

A car, initially at rest, travels 20 m in 4 s along a straight line with constant acceleration. The acceleration of the car is:

4.9m/s2

9.8m/s2

0.4m/s2

1.3m/s2

2.5m/s2

4 / 25

A baseball is thrown vertically into the air. The acceleration of the ball at its highest point is:

g, up

g, down

2g, down

2g, up

zero

5 / 25

A freely falling body has a constant acceleration of 9.8 m/s2. This means that:

the body falls 9.8 m during the first second only

the body falls 9.8 m during each second

the speed of the body increases by 9.8 m/s during each second

the acceleration of the body increases by 9.8 m/s2 during each second

the acceleration of the body decreases by 9.8 m/s2 during each second

6 / 25

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 =

64 s

8.0 s

32 s

4.0 s

16 s

7 / 25

An object is thrown straight up from ground level with a speed of 50 m/s. If g = 10 m/s2 its distance above ground level 6.0 s later is:

480 m

none of these

0.00 m

330 m

270 m

8 / 25

Throughout a time interval, while the speed of a particle increases as it moves along the x axis, its velocity and acceleration might be:

negative and positive, respectively

positive and zero, respectively

positive and negative, respectively

negative and zero, respectively

negative and negative, respectively

9 / 25

A particle moves along the x axis according to the equation x = 6t2, where x is in meters and t is in seconds. Therefore:

t cannot be negative

each second the velocity of the particle changes by 9.8 m/s

the acceleration of the particle is 6 m/s2

the particle follows a parabolic path

none of the above

10 / 25

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:

12.5

160

11 / 25

An object is shot vertically upward. While it is rising:

its velocity and acceleration are both decreasing

its velocity is downward and its acceleration is upward

its velocity and acceleration are both downward

its velocity and acceleration are both upward

its velocity is upward and its acceleration is downward

12 / 25

Over a short interval near time t = 0 the coordinate of an automobile in meters is given by x(t) = 27t − 4.0t3, where t is in seconds. At the end of 1.0 s the acceleration of the auto is:

27 m/s2

−4.0 m/s2

4.0 m/s2

−12 m/s2

−24 m/s2

13 / 25

A feather, initially at rest, is released in a vacuum 12 m above the surface of the earth. Which of the following statements is correct?

The maximum velocity of the feather is 9.8 m/s

The acceleration of the feather decreases until terminal velocity is reached

The acceleration of the feather is zero

The acceleration of the feather remains constant during the fall

The acceleration of the feather increases during the fall

14 / 25

Which one of the following statements is correct for an object released from rest?

The average velocity during the first second of time is 4.9m/s

The acceleration changes by 9.8m/s2 every second

During each second the object falls 9.8m

The object falls 9.8m during the first second of time

The acceleration of the object is proportional to its weight

15 / 25

A ball is in free fall. Its acceleration is:

upward during ascent and downward during descent

downward during both ascent and descent

downward during ascent and upward during descent

downward at all times except adownward at all times except at the very top, when it is zerot the very top, when it is zero

upward during both ascent and descent

16 / 25

A racing car traveling with constant acceleration increases its speed from 10m/s to 50m/s over a distance of 60 m. How long does this take?

2.0 s

8.0 s

5.0 s

The time cannot be calculated since the speed is not constant

4.0 s

17 / 25

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:

12 m

54 m

36 m

144 m

24 m

18 / 25

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:

100 m

85 m

62 m

31 m

15 m

19 / 25

At a location where g = 9.80 m/s2, an object is thrown vertically down with an initial speed of 1.00 m/s. After 5.00 s the object will have traveled:

127.5 m

255 m

250 m

245 m

125 m

20 / 25

At a stop light, a truck traveling at 15 m/s passes a car as it starts from rest. The truck travels at constant velocity and the car accelerates at 3 m/s2. How much time does the car take to catch up to the truck?

25 s

15 s

10 s

5 s

20 s

21 / 25

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:

14 m

25 m

59 m

12 m

22 / 25

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:

20 m/s south

20 m/s north

7 m/s south

43 m/s north

7 m/s north

23 / 25

An object is thrown vertically upward at 35 m/s. Taking g = 10 m/s2, the velocity of the object 5 s later is:

7.0 m/s up

15 m/s down

85 m/s up

85 m/s down

15 m/s up

24 / 25

Of the following situations, which one is impossible?

A body having velocity east and acceleration west

A body having velocity east and acceleration east

A body having constant acceleration and variable velocity

A body having zero velocity and non-zero acceleration

A body having constant velocity and variable acceleration

25 / 25

An object is thrown straight up from ground level with a speed of 50 m/s. If g = 10 m/s2 its distance above ground level 1.0 s later is:

45 m

60 m

50 m

40 m

55 m

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