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Physics for Engineers

Total questions: 90

Worksheet time: 1hrs 17mins

Name
Class
Date
1.
What SI unit is used to measure electric current?
a)
seconds
b)
amperes
c)
Kelvin
d)
mole
2.

SI stands for ___.

a)

Sports Illustrated

b)

Scientific Notation

c)

International System (of measurements)

d)

Instructional System (of measurements)

3.
Which of the following pairs of physical quantity and SI unit is correct ?
a)
Mass - SI unit : Gram
b)
Time - SI unit : Hour
c)
Electric current - SI unit : Volt
d)
Temperature - SI unit : Kelvin
4.
What is derived quantities ?
a)
a tendency to do nothing or to remain unchanged.
b)
combination of two or more base quantities
c)
the quantity of motion of a moving body, measured as a product of its mass and velocity.
5.

What is the derived unit for volume?

a)

square meter

b)

cubic meter

c)

kilograms per cubic meter

d)

grams per mole

6.

The shadow of a metre rule used to estimate the height of a tree is 75cm long and that of the tree is 840 cm long.

What is the estimated height of the tree in metres?

a)

11.2 m

b)

1120 m

c)

1.120 m

d)

112 m

7.

When an object of mass 85 g is fully immersed in a measuring cylinder, it displaces a volume of 17 cm 3. What is the density of the object in SI units?

a)

5 g/cm 3

b)

5000 g/cm 3

c)

5000 kg/cm 3

d)

5000 kg/m 3

8.

A body has a mass of 1600 g and its volume is  0.002 m30.002\ m^3 . Determine its density.

a)

800 gcm−3800\ gcm^{-3}  

b)

800 kgcm−3800\ kgcm^{-3}  

c)

0.8 kgm−30.8\ kgm^{-3}  

d)

800 kgm−3800\ kgm^{-3}  

9.

What are the units for frequency?

a)

Herz

b)

Hez

c)

Hertz

d)

Htz

10.

The distance between the Earth and the Sun is around 150,000,000 km. Express this value in scientific notation.

a)

15 x 10 7 km

b)

1.5 x 107 km

c)

15 x 108 km

d)

1.5 x 108 km

11.

Distance travelled by the body in 5 minutes if it travels with a speed of 20 ms-1.

a)

6 m

b)

600 m

c)

6 km

d)

45 km

12.

Scalars are the one which has __________

a)

Magnitude only

b)

direction only

c)

Magnitude and direction

13.

A car moving on a straight line path covers a distance of 2 km due east in 100 s, the speed & velocity of the car is

a)

20 ms-1 and 20 ms-1

b)

20 ms-1 and 40 ms-1

c)

20 ms-1 and 20 ms-1 due south

d)

20 ms-1 and 20 ms-1 due east

14.

The unit of linear acceleration is

a)


kg−mkg-m

b)

ms\frac{m}{s}

c)

ms2 \frac{m}{s^{2\ }}

d)

rads2 \frac{rad}{s^{2\ }}

15.

The speed of the car is 72 kmph. What is the speed in m/s?

a)

16 ms-1

b)

18 ms-1

c)

100 ms-1

d)

20 ms-1

16.
The speedometer on your car measures
a)
average speed.
b)
average velocity
c)
instantaneous speed.
d)
instantaneous velocity.
17.

Which of the following is a vector quantity?

a)

5 m/s

b)

5m/s, east

c)

5s

d)

none of these

18.

Which statement describes a vector?

a)

It has magnitude but no direction

b)

It has both direction and magnitude

c)

It has direction but no magnitude

d)

It has constant magnitude but no direction

19.

As the projectile reaches its maximum height, what happened to its final velocity?

a)

constant

b)

zero

c)

9.8 m/s

d)

-9.8 m/s

20.

During free fall, the acceleration due to gravity is approximately 9.8 m/s². If an object is dropped from rest, how long will it take to reach a speed of 19.6 m/s?

a)

1 second

b)

2 seconds

c)

4 seconds

d)

9.8 seconds

21.

A car accelerates uniformly from rest to 25 m/s in 5 seconds. What is the total displacement of the car during this time?

a)

62.5 m

b)

125 m

c)

25 m

d)

250 m

22.

What is the final velocity of an object that starts from rest, accelerates uniformly at 3 m/s², and travels a displacement of 45 meters?

a)

15 m/s

b)

18 m/s

c)

21 m/s

d)

12 m/s

23.

On a velocity-time graph, what does the area under the curve represent?

a)

Acceleration

b)

Displacement

c)

Velocity

d)

Time

24.

Which of the following equations is not one of the equations of motion for uniformly accelerated motion?

a)

v = v0 + at

b)

d = v0t + 1/2 at2

c)

v² = v0² + 2ad

d)

d = v0t - 1/2 at²

25.

If a ball is thrown straight up with an initial velocity of 15 m/s, what will be its velocity at the peak of its motion?

a)

0 m/s

b)

7.5 m/s

c)

15 m/s

d)

-15 m/s

26.

What is the displacement of an object that moves with a constant velocity of 10 m/s for 8 seconds?

a)

18 m

b)

80 m

c)

40 m

d)

100 m

27.

A car moving with an initial velocity of 20 m/s comes to a stop in 5 seconds due to uniform deceleration. What is the magnitude of this deceleration?

a)

2 m/s²

b)

4 m/s²

c)

-4 m/s²

d)

-2 m/s²

28.

An object starts from rest and accelerates uniformly at 5 m/s². What is the velocity of the object after 6 seconds?

a)

10 m/s

b)

30 m/s

c)

60 m/s

d)

15 m/s

29.

The displacement of an object that has moved can be:

a)

Positive (+)

b)

Negative (-)

c)

Zero

d)

All of the above

30.

When an object starts from rest, what is its original velocity?

a)

Depends on the problem

b)

0

c)

Always positive

d)

Always negative

31.

A boy is pulling a cart tied with a rope at speed of 4m/s. The rope is making 30 degree with the horizontal. What is the horizontal component?

a)

3.46 m/s

b)

2 m/s

c)

2.31m/s

d)

none of these

32.

One will use Pythagorean theorem to find the magnitude of

a)

two horizontal vectors added

b)

two vertical vectors added

c)

one vertical and one horizontal vectors added

d)

direction of the vectors

33.

A tangent function is used to find the direction of the perpendicular vectors added. Tangent is

a)

adjacenthypotenuse\frac{\text{adjacent}}{\text{hypotenuse}}

b)

oppositeadjacent\frac{\text{opposite}}{\text{adjacent}}

c)

adjacentopposite\frac{\text{adjacent}}{\text{opposite}}

d)

hypotenuseadjacent\frac{\text{hypotenuse}}{\text{adjacent}}

34.

A projectile is launched at an angle of  25°25\degree above horizontal. Ignoring air resistance, what are the projectiles horizontal and vertical accelerations when it reaches its maximum height?

a)

Both horizontal and vertical accelerations are zero

b)

The horizontal acceleration is zero and the vertical acceleration is 9.8ms29.8\frac{\text{m}}{\text{s}^2} .

c)

The horizontal acceleration is  9.8ms29.8\frac{\text{m}}{s^2}   and the vertical acceleration is zero

d)

Both the horizontal and vertical acceleration are  9.8ms29.8\frac{\text{m}}{\text{s}^2}  

35.

A football player kicks a ball with initial velocity of 25m/s at an angle  53°53\degree above the horizontal. What is the vertical component of the ball?

a)

33 m/s

b)

20 m/s

c)

15 m/s

d)

10 m/s

36.

A cannonball has initial velocity of 5m/s and have a vertical component of 3m/s. What is the angle at which the cannon ball is launched?

a)

37°37\degree

b)

53°53\degree

c)

31°31\degree

d)

none of these

37.

The magnitude of the first vector is 3 m to the east is connected to 4 m to the north. What is the magnitude of its resultant?

a)

1 m

b)

5 m

c)

25 m

d)

7 m

38.

A projectile is launched at 5 m/s with an angle  30°30\degree  from the horizontal. What is the maximum range obtained by the ball?

a)

 2.55 m

b)

4.33 m

c)

2.89 m

d)

none of these

39.

A coin tossed vertically upward and it reaches the highest point in 7.0s. at the highest point, the velocity is _______.

a)

9.8 m/s

b)

0

c)

9.8 m/s2 

d)

98 m/s2

40.

A 10 kg object experiences a net force of 20 Newtons. Calculate the object's acceleration.

a)

2 ms22\ \frac{m}{s^2}  

b)

0.5 ms20.5\ \frac{m}{s^2}  

c)

200 ms2200\ \frac{m}{s^2}  

d)

3.33 ms23.33\ \frac{m}{s^2}  

41.
What is Newtons 2nd law of motion?
a)

Force =mass x accelerationForce\ =mass\ x\ acceleration  

b)
An object at rest stays at rest unless acted on an unbalanced force.
c)

For every action there is a equal and opposite reaction

d)

Speed = displacementtimeSpeed\ =\ \frac{displacement}{time}  

42.

A cart of mass 4.0 kg is being pulled with a force of 24 N. The cart accelerates at 3.0m s–2. An unknown friction force also acts on the cart. What is the net force on the cart?

a)

6.0 N

b)

8.0 N

c)

12 N

d)

24 N

43.

A constant force of 12 N is applied for 3.0 s to a body initially at rest. The final velocity of the body is 6.0m s–1. What is the mass of the body?

a)

1.5 kg

b)

6.0 kg

c)

24 kg

d)

36 kg

44.

A box is pulled by a tension force with an unknown magnitude to the right. The box experiences a constant friction force equal to 20 Newtons. The box has a mass of 10 kg and experiences an acceleration of 5 m/s^2 to the right. What must be the magnitude of the tension force applied to the right?

a)

50 Newtons

b)

70 Newtons

c)

30 Newtons

d)

150 Newtons

45.

An object has a mass of 30 kg and an acceleration of 2 m/s^2. What must be the net force on the object?

a)

60 N

b)

45 N

c)

15 N

d)

0.067 N

46.

A 20 kg bike accelerates at 10 m/s2. What was the force?

a)

30 Newtons

b)

2 Newtons

c)

200 Newtons

d)

10 Newtons

47.

A book is lying at rest on a table. The book will remain there at rest because

a)

there is a net force but the book has too much inertia

b)

there are no forces acting on it at all

c)

there is no net force on the book

d)

there is a net force, but the book is too heavy to move

48.

A hockey puck slides on ice at constant velocity. What is the net force acting on the puck?

a)

equal to its weight

b)

zero

c)

less than its weight but more than zero

d)

depends on the speed of the puck

49.
If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)
a)
The one with a mass of .78 kg will have the greatest acceleration.
b)
The one with a mass of .52 kg will have the greatest acceleration.
c)
They will both accelerate at the same rate.
50.
A student pushes a box to right with a force of 10N while a young boy pushes the box to the left with a force of 8N. What is the sum of all forces on the box? 
a)
18N left
b)
18N right
c)
2N right
d)
2N left
51.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
52.
Which one of Newton’s Laws of Motion best explains why the dishes do not move when the table cloth is removed?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Biology
53.
____ is a force that occurs when an object rubs against another object.
a)
Motion
b)
Friction
c)
Velocity
d)
Speed
54.
Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron? 
a)
feathers 
b)
iron
c)
same
d)
depends on their friction
55.
A student pushes a box to right with a force of 10N while a young boy pushes the box to the left with a force of 8N. What is the sum of all forces on the box? 
a)
18N left
b)
18N right
c)
2N right
d)
2N left
56.
Which of Newton's laws are illustrated with a rocket launch?
a)
1st Law, the Law of Inertia. 
b)
2nd Law, the Law of Acceleration.
c)
3rd Law, the Law of Action Reaction
d)
The Law of Conservation of Mass
57.

Which way would a swimmer push to move forward in the water?

a)

To the left

b)

Forward

c)

Backward

58.

One litre of water occupies a volume of

a)

100 cm3

b)

250 cm3

c)

500 cm3

d)

1000 cm3

59.

The force of attraction between object with mass

a)

magnetism

b)

gravity

c)

weight

d)

electrostatic

60.

A boy pushes a book kept on a table by applying a force of 4.5 N. find the work done by the force, if book is displaced through 30 cm along the direction of push

a)

1.10 J

b)

1.25 J

c)

1.35 J

d)

None

61.

How much work is being done with 200 N of force to the right on object that moves 426 meters to the right? (assume the force and displacement are in the same direction)

a)

85,200 J

b)

45,620 J

c)

90,480 J

d)

62,329 J

62.

What is the formula for calculating the total amount of mechanical energy?

a)

ME = KE + PE

b)

KE = ME + PE

c)

PE = mgh

d)

ME = 1/2 mv2

63.
if you push a cart with a force of 60 N resulting in 120 J of work.. how far did you move the cart? 
a)
7200 m
b)
0 m
c)
2 N 
d)
2 m
64.
What is the unit of measurement for power?
a)
Joules
b)
Watts
c)
Voltage
d)
Calories
65.
How do you calculate power?
a)
P = W/t
b)
P = E/t
c)
P = w * t
d)
P = bbq/chicken
66.
What is the formula for Kinetic Energy?
a)
PE = m*g*h
b)
KE = 1/2m*v2
c)
W = F*d
d)
P = W/t
67.

A box is pushed by 20 N force to the right and displace for 0.1 m. What is the work done?

a)

0.005 J

b)

0.1 J

c)

1 J

d)

2 J

68.

As speed increases, kinetic energy

a)

Increases

b)

Decreases

c)

Stays the same

d)

Increase then decrease

69.

What would 54N be an example of?

a)

work

b)

power

c)

distance

d)

force

70.
A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball? 
a)
77 J
b)
7.7 J 
c)
0.7 J 
d)
770 J 
71.

A work of the force is ____________ if the force and displacement are in the same direction.

a)

positive

b)

negative

c)

it depends on the problem

72.

Which of the following statements are true about work?

a)

Work is a form of energy.

b)


Work is a time-based quantity; it is dependent upon how fast a force displaces an object.

c)


Newton is the standard metric unit of work.

d)

None of these.

73.

Which of the following statements are true about potential energy?

a)

Potential energy is dependent on the speed of a body.

b)

Moving objects cannot have potential energy.

c)


Potential energy is the energy stored in an object due to its position.

d)


None of these

74.

Which of the following statements are true about kinetic energy?

a)

Kinetic energy is the form of mechanical energy which depends upon the position of an object.

b)


If an object is on the ground, then it does not have any kinetic energy.

c)


If an object is at rest, then it does not have any kinetic energy.

d)


None of these

75.

At which point on the roller coaster is the kinetic energy at its maximum?

a)

A

b)

B

c)

C

d)

D

76.

A 10-kg box is lying on a horizontal floor. It is pulled 3 m horizontally with a force of 30 N. What is the work done in Joules?

a)

0

b)

30

c)

90

d)

294

77.

How much work must be done to stop a 1250-kg car traveling at 105 km/hr?

a)

480 kJ

b)

540 kJ

c)

630 kJ

d)

720 kJ

78.

An open cart rolls along a frictionless track while it is raining. As it rolls, what happens to the speed of the cart as the rain collects in it? (assume that the rain falls vertically into the box)

a)

stops immediately

b)

maintains constant speed

c)

speeds up

d)

slows down

79.

A small car and a large truck collide head-on and stick together. Which one has the larger momentum change?

a)

the car

b)

the truck

c)

they both have the same momentum change

80.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
81.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
82.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
83.
Which of the following correctly defines impulse?
a)
change of momentum
b)
force over time
c)
magnitude of impact
d)
all of these are correct
84.
The law of conservation of momentum states that, 
a)
p before is less than p after
b)
p before is the same as p after
c)
p before is more than p after
85.
What makes it possible to determine the motion of objects before or after colliding?
a)
Conservation of Energy
b)
Conservation of Strength
c)
Conservation of Momentum
d)
Conservation of Homework
86.

Which of the following is NOT a unit of momentum?

a)

kg*m/s

b)

N*s

c)

kg*mph

d)

kg*m/s2

87.

In an elastic collision, ______ is conserved.

a)

Momentum only

b)

Kinetic Energy only

c)

Both momentum and energy

88.
A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 
a)
55 kg*m/s
b)
100 kg*m/s
c)
250 kg*m/s
d)
500 kg*m/s
89.
Two objects of the same mass collide with each other.  The second object is at rest and the first is moving at 5 m/s North before the collision.  After the collision, the first mass is at rest and the second mass continues at 5 m/s North. 
The type of collision represented by these two masses is
a)
Inelastic
b)
Explosive
c)
Elastic
90.
In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other.  The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1m/s.  The carts stick together when they collide.  Calculate their final speed.
a)
0.5 m/s
b)
1.0 m/s
c)
0.33 m/s
d)
0.67 m/s

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