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Test Paper II

Total questions: 60

Worksheet time: 30mins

Name
Class
Date
1.

Physical quantities are

a)

quantities such as degrees, radians and steradians

b)

quantities such as length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity

c)

quantities such as pounds, dollars and rupees

d)

quantities such as kilos, pounds and gallons

2.

Which of the following pairs has the same dimensions?

a)

specific heat and latent heat

b)

Impulse and momentum

c)

surface tension and force

d)

moment of lnertia and torque

3.

The dimensions of kinetic energy is same as that of

a)

force

b)

pressure

c)

work

d)

momentum

4.

In SI system the fundamental units are

a)

meter, kilogram, second, ampere, Kelvin, mole and candela

b)

meter, kilogram, second, coulomb, Kelvin, mole and candela

c)

meter, Newton, second, ampere, Kelvin, mole and candela

d)

meter, kilogram, second, ampere, Kelvin, mole and lux

5.

Light year is a unit of

a)

time

b)

distance

c)

sunlight intensity

d)

mass

6.

Which of these is not a vector quantity?

a)

displacement

b)

time

c)

velocity

d)

acceleration

7.

Which of the following quantities are vectors?

a)

speed, velocity, acceleration

b)

velocity, acceleration, force

c)

force, acceleration, mass

d)

length, mass, time

8.
A car travels 90 meters due north in 15 seconds. Then the car turns around and travels 40 meters due south.  What is the magnitude and direction  of the car's resultant displacement?  
a)
40 metres, South
b)
50 metres, South
c)
50 metres, North
d)
40 metres, North 
9.
Which statement describes a vector?
a)
It has magnitude but no direction
b)
It has direction but no magnitude
c)
It has both direction and magnitude
d)
It has constant magnitude but no
 direction
10.

The First Law of Motion is also called what?

a)

Acceleration

b)

Velocity

c)

Inertia

d)

Force

11.

The Second Law of Motion is also written as what?

a)

y = mx + b

b)

f = ma

c)

a^2 + b^2 = c^2

d)

d / t = v

12.

The Third Law of Motion states that for every action there is an opposite and equal what?

a)

action

b)

reaction

c)

force

d)

burst

13.

The Third Law of Motion states that for every action there is an opposite and equal what?

a)

action

b)

reaction

c)

force

d)

burst

14.

A force is a what?

a)

push or pull

b)

thing used by Jedi's

c)

property of matter

d)

something to be reckoned with

15.

Inertia is a property of what?

a)

mass

b)

matter

c)

substance

d)

option

16.

In order to move an object, the forces must be what?

a)

balanced

b)

unbalanced

c)

in motion

d)

at rest

17.

“For every action, there is an equal and opposite reaction”.

a)

First law

b)

Second law

c)

Third law

d)

All of the above

18.
A 2.5 kg ball moving at 5 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision.  What is the velocity of the second ball after the collision? 
a)
5 m/s
b)
2.5 m/s
c)
10 m/s
d)
7.5 m/s
19.
A .030 kg bullet is fired from a gun with a speed of 350 m/s. If the gun has a mass of 0.9 kg, What is the recoil speed of the gun?
a)
11.7 m/s
b)
9.0 m/s
c)
10.5 m/s
d)
10 m/s
20.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
21.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than 
b)
less than 
c)
equal to
d)
unrelated to
22.
The recoil speed of a rifle is much less than the exit velocity of a bullet because...
a)
the rifle experiences a smaller force
b)
the rifle experiences a smaller change in momentum
c)
the rifle has a much greater mass
d)
the rifle does not obey the laws of physics
23.

What is the resultant/ net force?

a)

400 N Up

b)

400 N Down

c)

- 400 N Down

d)

800 N Down

24.

What is the magnitude of the resultant vector, r?

a)

3

b)

4

c)

5

d)

7

25.

A vector includes ______ and ________.

a)

direction, magnitude

b)

magnitude, units

c)

direction, units

d)

scalars, scalars

26.

The greatest resultant of two forces of magnitudes P and Q has magnitude

a)

P + Q

b)

P - Q

c)

0

d)

R

27.

If the resultant force R is least then, the angle between the two forces P and Q will be

a)

π\pi

b)

π\pi / 2

c)

π\pi / 4

d)

0

28.

The resultant of two unlike parallel forces P and Q is

a)

P + Q

b)

P - Q

c)

R

d)

0

29.

By Lami's theorem, P/ sin( Q , R) = Q / sin( R , P) =

a)

R

b)

R / sin ( P , Q)

c)

P / Q

d)

P / R

30.

The direction of the resultant of the forces P and Q is given by 

 tan⁡ ϕ\tan\ \phi =  

a)

 Qsin⁡αP + Qcos⁡α\frac{Q\sin\alpha}{P\ +\ Q\cos\alpha}  

b)

 Qcos⁡αP + Qsin⁡α\frac{Q\cos\alpha}{P\ +\ Q\sin\alpha}  

c)

 Psin⁡αQ + Psin⁡α\frac{P\sin\alpha}{Q\ +\ P\sin\alpha}  

d)

None of the above

31.

A force of 4 N acts on a lever 2 m from the pivot. What is the moment?

a)

8 Nm

b)

6 Nm

c)

2 Nm

d)

3 Nm

32.

James weighs 200 N and sits 1 m from the pivot. Jane weighs 100 N. How far from the pivot must Jane be to balance the beam?

a)

0.5 m

b)

1 m

c)

2 m

d)

4 m

33.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
34.
A drag racer accelerated from 0 m/s to 200 m/s in 5 s.  What was the acceleration?
a)
0 m/s
b)
40 m/s2
c)
-40 m/s2
d)
40 m/s
35.
A golf ball starts with a speed of 2 m/s and slows at a constant rate of 0.5 m/s2, what is its velocity after 2 s?
a)
0 m/s
b)
0.5 m/s
c)
1 m/s
d)
1.5 m/s
36.
Which state of matter has no definite shape or volume?
a)
Solids have no definite shape or volume.
b)
Liquids have no definite shape or volume.
c)
Gases have no definite shape or volume.
d)
Displacements have no definite shape or volume. 
37.

stress

a)

the process by which the shape of a rock changes because of stress

b)

the amount of force per square unit area on a given material

c)

stress that occurs when an object is stretched

d)

stress that occurs when an object is squeezed

38.

What is the deformation of materials in response to stress?

a)

Stress

b)

Strain

c)

Elastic Deformation

d)

Plastic Deformation

39.

What is the process when stress causes a material to strain, but afterward the material returns to its original shape?

a)

Stress

b)

Strain

c)

Elastic Deformation

d)

Plastic Deformation

40.

deformation

a)

the process by which the shape of a rock changes because of stress

b)

the amount of force per square unit area on a given material

c)

stress that occurs when an object is stretched

d)

stress that occurs when an object is squeezed

41.

tension

a)

the process by which the shape of a rock changes because of stress

b)

the amount of force per square unit area on a given material

c)

stress that occurs when an object is stretched

d)

stress that occurs when an object is squeezed

42.

What happens when stress exceeds strain?

a)

Nothing happens, the material stays as is

b)

The material will go back to normal

c)

The material will stay deformed

d)

The material will break

43.

According to Hooke's law; Force is equal to -

a)

Spring Constant × Extension

b)

Spring Constant ÷ Extension

c)

Spring Constant + Extension

d)

Spring Constant - Extension

44.

Pascal states that

a)

Pressure is force per unit area

b)

When velocity is higher, the pressure is lower

c)

When force is applied, the pressure is transmitted equally through the fluid

d)

Pressure transmitted is directly proportional to the force applied

45.

Which comparison is correct

a)

F1 = F2

b)

P1 > P2

c)

F1 > F2

d)

P1 = P2

46.
The combination of all forces acting on an object is called __________
a)
Parallelogram Rule
b)
Net Force
c)
Vector Quantity
d)
All the Jedi's using their abilities together
47.
Equilibrium means _________
a)
being at rest
b)
traveling at light speed
c)
balance
d)
pushing or pulling
48.

 Young's modulus is defined a

a)

Tensile strain/Tesnsile stress

b)

Tensile stress*Tensile strain

c)

Tensile stress/Tensile strain

d)

Length/area

49.

When too many people stand on a bridge it collapses, why?

a)

Due to increase in stress

b)

Due to improper construction

c)

Due to overweight

d)

Due to friction

50.

What happens when the stress applied to the body is increased beyond the maximum value and is removed after some time?

a)

The body will come back to its original position

b)

The body will oppose the stress

c)

The body cannot return to its original position

d)

The body becomes hot

51.

When a beam is subjected to simple bending, ____________ is the same in both tension and compression for the material.

a)

Modulus of rigidity

b)

Modulus of elasticity

c)

Poisson’s ratio

d)

Modulus of section

52.

Bernoulli’s principle is defined as the___________________________________________________________.

a)

A. velocity in a fluid remains constant as the fluid’s pressure changes

b)

B. pressure in a fluid remains constant as the fluid’s velocity changes

c)

C. Pressure in a fluid decreases as the fluid’s velocity increases

d)

D. Pressure in a fluid increases as the fluid’s velocity increases

53.

Another name for laminar flow

a)

Eddie flow

b)

Zig Zag flow

c)

Streamline flow

d)

None of the above

54.

Shear stress in static fluid is

a)

always zero

b)

always maximum

c)

between zero to maximum

d)

unpredictable

55.

Turbulent flow is characterized by _______

a)

low flow rates

b)

irregular and chaotic flow

c)

regular streamlines

d)

constant speed

56.

The term fluids generally applies to:

a)

solid and liquid

b)

liquid and gas

c)

solid and plasma

d)

water only

57.

State Bernoulli's principle as an equation

a)

The pressure, the kinetic energy per unit volume and the potential energy per unit volume of the fluid is a constant

b)

The pressure, the kinetic energy and the potential energy per unit volume of the fluid is a constant

c)

sum of the pressure, the kinetic energy per unit volume and the potential energy per unit volume of the fluid is a constant


d)

sum of the pressure, the kinetic energy per unit volume and the potential energy per unit volume of the fluid are equal

58.

Write the formula used to calculate flow rate

a)

F=AV

b)

F=AV2

c)

F=PA

d)

F=Mg

59.
What is viscosity?
a)
A liquid's resistance to flow.
b)
a liquids flow.
c)
a liquid
d)
gas to solid.
60.

Liquids with very high viscosity flow very _______________________.

a)

fast

b)

not at all

c)

slow

d)

whenever it wants

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