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11 Feedforward- Formulas, Units Key Facts !

Total questions: 108

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

Average velocity is best described by which expression?

a)

Change in displacement divided by change in time

b)

Total path length divided by total time

c)

Change in speed divided by change in time

d)

Final displacement minus initial velocity

2.

Acceleration can be calculated using which formula?

a)

Distance divided by speed

b)

Change in velocity divided by change in time

c)

Force multiplied by time

d)

Velocity divided by displacement

3.

Which relation gives the net force on a mass m?

a)

Force equals mass times acceleration

b)

Force equals mass times velocity

c)

Force equals momentum over time

d)

Force equals work divided by distance

4.

Weight W of an object near Earth is given by which expression?

a)

Weight equals force times perpendicular distance

b)

Weight equals mass divided by acceleration due to gravity

c)

Weight equals density times volume

d)

Weight equals mass times gravitational field strength

5.

Moment of a force about a pivot equals which quantity?

a)

Mass times acceleration at the pivot

b)

Work done divided by time at the pivot

c)

Force times perpendicular distance from pivot

d)

Force divided by area at the pivot

6.

A spring obeying Hooke’s law requires which force to extend it by x?

a)

Force equals change in momentum over time

b)

Force equals mass times velocity squared

c)

Force equals weight minus gravitational field strength

d)

Force equals spring constant times extension

7.

Which expression defines momentum p of a moving body?

a)

Momentum equals mass times velocity

b)

Momentum equals force times distance

c)

Momentum equals weight times height

d)

Momentum equals energy transformed over time

8.

Impulse delivered by a constant force over time Δt equals what?

a)

Force times time equals change in momentum

b)

Force divided by time equals momentum

c)

Mass times acceleration equals impulse

d)

Work done equals impulse times distance

9.

Work done W by a force moving through distance d equals which product?

a)

Pressure multiplied by area

b)

Force multiplied by distance

c)

Momentum multiplied by velocity

d)

Energy transformed divided by time

10.

Which formula gives kinetic energy Ek of a body with mass m and speed v?

a)

Mass times velocity divided by two

b)

Mass times velocity squared times two

c)

Half times mass divided by velocity squared

d)

Half times mass times velocity squared

11.

Gravitational potential energy increase when raising mass m by height Δh in field g is:

a)

Mass times velocity times change in height

b)

Mass times g times change in height

c)

Mass times g divided by change in height

d)

Half mass times g times height squared

12.

Power P is defined as which quantity in energy terms?

a)

Energy transformed divided by time

b)

Force multiplied by velocity

c)

Work done multiplied by time

d)

Energy transformed multiplied by distance

13.

Density ρ of a material is defined by which ratio?

a)

Weight divided by area

b)

Mass times gravitational field strength

c)

Mass divided by volume

d)

Force divided by distance

14.

Pressure p on a surface is calculated as which ratio?

a)

Weight divided by volume

b)

Force divided by area

c)

Energy divided by time

d)

Density times velocity

15.

Convert a temperature from Celsius θ to Kelvin T. Which relation is correct?

a)

Kelvin equals Celsius times 273

b)

Kelvin equals Celsius plus 273

c)

Kelvin equals 273 minus Celsius

d)

Kelvin equals Celsius minus 273

16.

Thermal energy transferred ΔE when mass m warms by ΔT with specific heat capacity c equals:

a)

Mass times specific heat capacity times temperature change

b)

Specific heat capacity divided by mass times ΔT

c)

Mass plus c plus ΔT multiplied

d)

Mass times temperature change divided by c

17.

Which relation ties wave speed v to frequency f and wavelength λ?

a)

Wave speed equals frequency divided by wavelength

b)

Wave speed equals frequency minus wavelength

c)

Wave speed equals wavelength divided by frequency

d)

Wave speed equals frequency times wavelength

18.

At the critical angle for total internal reflection, which holds for refractive index n?

a)

Sine of critical angle equals refractive index squared

b)

Sine of critical angle equals one over refractive index

c)

Sine of critical angle equals refractive index

d)

Sine of critical angle equals one times refractive index

19.

The refractive index n between two media can be expressed as:

a)

Sine incident angle divided by sine refracted angle

b)

Sine refracted angle divided by sine incident angle

c)

Cosine incident angle divided by sine refracted angle

d)

Tangent incident angle divided by sine refracted angle

20.

Snell’s law for refraction between air and a material with refractive index n, angle of incidence i and refraction r is:

a)

n=sin(r)/sin(I)

b)

n=sin(i)/sin(r)

c)

n=r/i

d)

n=i/r

21.

Refractive index n of a medium relates to light speeds in a vacuum c and in medium v by?

a)

n = c-v

b)

n=v/c

c)

n=c/v

d)

n=c+v

22.

Potential difference V across a component relates to current I, charge Q and resistance R by:

a)

V=QR

b)

V=I/R

c)

V=R/I

d)

V=IR

23.

Energy transformed E in an electrical component over time t is:

a)

Resistance times current times time

b)

Current times voltage times time

c)

Current divided by voltage times time

d)

Voltage minus current times time

24.

Total resistance Rtotal for series resistors is found how?

a)

Sum of individual resistances in series

b)

Product of resistances in series

c)

Difference of resistances in series

d)

Sum of reciprocals in series

25.

For two resistors used as a potential divider, what equals the ratio R1/R2?

a)

Ratio of powers P1 over P2

b)

Ratio of currents I1 over I2

c)

Ratio of voltages V1 over V2

d)

Ratio of energies E1 over E2

26.

In a parallel network, which statement about total resistance RT is correct. resistors in parallel are R1 and R2?

a)

RT=R1+R2

b)

RT=R1=R2

c)

1/RT=1/R1+1/R2

d)

RT=1/R1+1/R2

27.

What is the SI unit for length?

a)

volt

b)

pascal

c)

second

d)

metre

28.

Which quantity has the unit newton metres Nm?

a)

Power

b)

Pressure

c)

Moment

d)

Energy

29.

Select all quantities measured in joules.

a)

Moment

b)

Power

c)

Work

d)

Energy

30.

What is the unit symbol for temperature in Kelvin?

a)

K

b)

°C

c)

Pa

d)

J

31.

Which quantity uses coulomb (C) as its unit?

a)

charge

b)

current

c)

voltage

d)

resistance

32.

Match each unit to its correct unit symbol.

a)

kilogram

1.

kg

b)

metre

2.

m

c)

second

3.

s

d)

ampere

4.

A

33.

Which option lists correct units for velocity?

a)

metres per second

b)

metres per kilogram

c)

newtons per second

d)

joules per second

34.

What is the unit symbol for power?

a)

N

b)

J

c)

W

d)

Pa

35.

Select the correct unit for density.

a)

newtons per cubic metre

b)

kilograms per metre

c)

kilograms per cubic metre

d)

joules per cubic metre

36.

Which symbol represents wavelength?

a)

λ

b)

V

c)

v

d)

f

37.

Which symbol represents frequency?

a)

λ

b)

V

c)

v

d)

f

38.

Which symbol represents wave speed?

a)

λ

b)

V

c)

v

d)

f

39.

Match each electrical quantity to its unit.

a)

current

1.

ampere

b)

voltage

2.

volt

c)

resistance

3.

ohm

d)

charge

4.

coulomb

40.

Which unit symbol corresponds to frequency?

a)

Nm

b)

N

c)

Hz

d)

kg

41.

Acceleration is measured in which units?

a)

joules per second

b)

newtons per metre

c)

metres per second squared

d)

metres per second

42.

Specific heat capacity uses which unit?

a)

N m

b)

kg m⁻³

c)

J s⁻¹

d)

J kg⁻¹ °C⁻¹

43.

Which formula represents the relationship between work done W, force F, and distance d?

a)

W equals F minus d

b)

W equals F plus d

c)

W equals F times d

d)

W equals F divided by d

44.

What is the unit of measurement for electric charge?

a)

Watt

b)

Volt

c)

Ohm

d)

Coulomb

45.

SI unit for mass?

a)

kilograms

b)

grams

c)

pounds

d)

metres

46.

SI unit for force?

a)

Joules

b)

Watts

c)

Newtons

d)

Yoda

47.

SI unit for time?

a)

seconds

b)

minutes

c)

hours

d)

days

48.

SI unit for energy

a)

Joules

b)

Watts

c)

Newtons

d)

meters

49.

Formula for kinetic energy, where mass m, velocity v, Workdone W, time t, Force F, distance d and height change h

a)

KE = mgh

b)

KE = 12\frac{1}{2} mv2

c)

KE = Fd

d)

KE = W/t

50.

Formula for gravitational potential energy, where mass m, velocity v, Workdone W, time t, Force F, distance d and height change h is?

a)

GPE = mgh

b)

GPE = 12\frac{1}{2} mv2

c)

GKE = Fd

d)

GPE = W/t

51.

SI unit for power

a)

Watts

b)

Joules

c)

Newtons

d)

Meters

52.

Formula for power

a)

P = W/t

b)

P = E/t

c)

P = W*t

d)

P = E*t

53.

What does the W in this equation stand for?

a)

watt

b)

work

c)

weight

d)

width

54.

What are we looking for in this equation?

a)

power

b)

weight

c)

width

d)

time

55.

What does F in this equation stand for?

a)

first

b)

final velocity

c)

force

56.

Select the correct formula for Kinetic Energy Ek:

a)

Ek=½mg²

b)

Ek=½mv²

c)

Ek=2mv²

d)

Ek=½gv²

57.

Select the correct formula for acceleration a

a)

a=(v-g)/t

b)

a=t/(v-u)

c)

a=(v-u)/t

d)

a=(v-t)/u

58.

Select the correct formula:

a)

F=m·a

b)

F=m·t

c)

F=t·a

d)

F=d·a

59.

What is constant in a gas if the temperature is always the same:

a)

V/P

b)

P/V

c)

P·T

d)

P·V

60.

Which label is missing in the box?

a)

trough

b)

crest

c)

wavelength

d)

amplitude

61.

Select the correct formula for an echo:

a)

v=d/t

b)

v=2d/t

c)

v=2t/d

d)

v=2d·t

62.

Four wires are made of the same metal. Which wire has the greatest resistance?

a)

a 100 cm long wire with a diameter of 3.0 mm

b)

a 100 cm long wire with a diameter of 6.0 mm

c)

a 10 cm long wire with a diameter of 3.0 mm

d)

a 10 cm long wire with a diameter of 6.0 mm

63.

A student uses four ammeters P, Q, R and S to measure the current in different parts of the circuit shown. Which two ammeters read the largest current?

a)

P and Q

b)

P and R

c)

R and Q

d)

R and S

64.

Several cells are connected in series, as shown. What is the combined electromotive force (e.m.f.) of the cells?

a)

the average of the e.m.f.s of the separate cells

b)

the e.m.f. of one of the cells

c)

the product of the e.m.f.s of the cells

d)

the sum of the e.m.f.s of the cells

65.

In which unit is potential different measured?

a)

ampere

b)

Ohm

c)

Volt

d)

Watt

66.

There is a current of 5.0A in a resistor. The potential difference (p.d.) across the resistor is 24V. How much energy is transferred in the resistor in 1.0 minute?

a)

5.0 J

b)

120 J

c)

290 J

d)

7200 J

67.

Which statement correctly describes the effects of placing a heavy load in a car?

a)

It is easier to accelerate the car and easier to bring the car to rest.

b)

It is easier to accelerate the car but more difficult to bring the car to rest.

c)

It is more difficult to accelerate the car and more difficult to bring the car to rest.

d)

It is more difficult to accelerate the car but easier to bring the car to rest.

68.

A mass of 6.0 kg rests on the surface of a planet. On this planet, g = 20 N/kg.


What is the weight of the object?

a)

0.30 N

b)

0.60 N

c)

60 N

d)

120 N

69.

Two forces P and Q act on an object. Which diagram shows the resultant of these two forces?

a)
b)
c)
d)
70.

A fire alarm is not loud enough and the pitch is too low. An engineer adjusts the alarm so that it produces a louder note of a higher pitch.

What effect does this have on the amplitude A and on the frequency F of the sound?

a)

A: larger | F: greater

b)

A: larger | F: smaller

c)

A: smaller | F: greater

d)

A: smaller | F: smaller

71.

Two beams of light are both the same colour of red. One beam is travelling through air. The other beam is travelling through water. Each beam has a different brightness.

Which quantity is the same for both sets of waves?

a)

Amplitude

b)

Frequency

c)

Speed

d)

Wavelength

72.

The diagram shows how a ray of light refracts when going from air to Perspex. The critical angle of Perspex is c. Which expression is correct?

a)

sin x /sin z = sin c

b)

sin z / sin x = sin c

c)

sin w / sin y = sin c

d)

sin y / sin w = sin c

73.

The letter F is reflected in a mirror. What does the optical image look like?

a)

b)

c)

d)

74.

Which diagram shows what happens when a ray of white light passes through a prism?

a)

b)

c)

d)

75.

Light travels in a vacuum and then enters a glass block. The speed of the light in the glass block is 2.0 x 10^8 m/s.

Which statement about the speed of light is correct?

a)

The speed in a vacuum is 1.5 times the speed in the glass.

b)

The speed in the glass is the same as the speed in a vacuum.

c)

The speed in the glass is 1.5 times the speed in a vacuum.

d)

The speed in the glass is 1.0 x 10^8 times the speed in a vacuum.

76.
a)

6 cm

b)

10 cm

c)

26 cm

d)

30 cm

77.

Which statement gives a complete description of any object that is in equilibrium?

a)

There are no forces acting.

b)

There is no resultant force.

c)

There is no resultant force and no resultant turning effect.

d)

There is no resultant turning effect.

78.

What is the unit of the moment of a force?

a)

N

b)

N/kg

c)

N/m

d)

Nm

79.
a)

80 N

b)

100 N

c)

180 N

d)

225 N

80.

A liquid is evaporating. The liquid is not boiling.

Which statement about the liquid is correct at an instant in time?

a)

Any molecule can escape, and from any part of the liquid.

b)

Any molecule can escape, but only from the liquid's surface.

c)

Only molecules with enough energy can escape, and only from the liquid's surface.

d)

Only molecules with enough energy can escape, but from any part of the liquid.

81.

Which equation can be used to calculate the pressure at a depth h beneath the surface of a liquid?

a)

p=h ρgp=\frac{h}{\ \rho g}  

b)

p=hρgp=\frac{h\rho}{g}  

c)

p=hρgp=h\rho g  

d)

p=1hρgp=\frac{1}{h\rho g}  

82.

A fixed mass of gas is trapped in a container. The temperature of the gas is increased but the volume of the gas is kept constant.

How does this change affect the kinetic energy of the molecules and the pressure on the walls of the container?

a)

Kinetic Energy: increases | Pressure: increases

b)

Kinetic Energy: stays the same | Pressure: increases

c)

Kinetic Energy: increases | Pressure: decreases

d)

Kinetic Energy: decreases | Pressure: increases

83.

An object is 20 cm below the surface of a liquid. The density of the liquid is 1200 kg/m3. Use g = 10 ms-2

What is the pressure on the object due to the liquid?

a)

600 Pa

b)

2400 Pa

c)

60000 Pa

d)

240000 Pa

84.

Which statement about the evaporation of a liquid is correct?

a)

The least energetic molecules escape from the surface and the temperature of the liquid decreases.

b)

The least energetic molecules escape from the surface and the temperature of the liquid increases.

c)

The most energetic molecules escape from the surface and the temperature of the liquid decreases.

d)

The most energetic molecules escape from the surface and the temperature of the liquid increases.

85.

Which energy resource has the Sun as its only source of energy?

a)

geothermal

b)

nuclear

c)

oil

d)

tidal

86.

Which of the following energy resources is renewable?

a)

oil

b)

solar

c)

coal

d)

nuclear

87.

Which of the following energy resources relies on fuel being consumed?

a)

wind

b)

waves

c)

nuclear fission

d)

hydroelectricity

88.

Which of the following energy resources relies on fuel being consumed?

a)

wind

b)

waves

c)

nuclear fission

d)

hydroelectricity

89.

What are boiling points?

a)

the temperature at which a liquid turns into a gas

b)

the temperature at which a liquid turns into a solid

c)

the temperature at which a gas turns into a liquid

d)

the temperature at which a solid turns into a liquid

90.

What is Brownian motion?

a)

the movement of small particles suspended in a liquid or gas

b)

an electrical device made of two different metals

c)

when a wave spreads out as it travels through a gap or past the edge of an object

d)

electricity is generated when a coil moves near a magnet

91.

What happens when particles are heated?

a)

they gain kinetic energy and vibrate

b)

they dance aggressively

c)

they become dormant

d)

they decay

92.

What is temperature?

a)

energy being transferred in waves

b)

the total kinetic energy of all particles

c)

energy being transferred from a hotter place to a colder place

d)

the average kinetic energy of individual particles

93.

What is specific heat capacity?

a)

how much heat energy a material can hold

b)

how much a material can hold

c)

how much energy required per unit mass to increase the temperature

d)

the energy needed to boil or melt a material

94.

Which of the following is a great conductor?

a)

Glass

b)

Silver

c)

Polystyrene

d)

Rubber

95.

What is convection?

a)

transfer of heat energy without the movement of the material itself

b)

energy transferred by an electric current

c)

transferring energy by means of a force

d)

transfer of heat energy through a material with the movement of the material itself

96.

Which of the following is the best reflector?

a)

Matt black

b)

Shiny white

c)

Matt white

d)

Shiny black

97.

What happens when the amplitude increases?

a)

The pitch increases

b)

The volume increases

c)

The pitch decreases

d)

The volume decreases

98.

What are sounds above 20,000 Hz called?

a)

Infrared

b)

Ultrasound

c)

Ultraviolet

d)

Infrasound

99.

What word matches this description?: A region of a sound wave where the particles are pushed together.

a)

Refraction

b)

Compression

c)

Rarefaction

d)

Dispersion

100.

Which of the following statements best describes a transverse wave?

a)

a wave that vibrates at right angles to the direction of energy transfer

b)

a wave that vibrates parallel to the direction of energy transfer

c)

a sound wave

d)

a wave that crosses other wavefronts

101.

Which of the following statements best describes a longitudinal wave?

a)

a wave that vibrates at right angles to the direction of energy transfer

b)

a wave that vibrates parallel to the direction of energy transfer

c)

a light wave

d)

a wave that crosses other wavefronts

102.

Which of the following is a type of longitudinal wave?

a)

microwave

b)

radio wave

c)

sound wave

d)

Mexican wave

103.

A wave has a time period of 0.2 s. What is the frequency of the wave?

a)

0.2 Hz

b)

5 Hz

c)

0.2 s

d)

5 s

104.

A cyclist rotates the pedals of his bike twice in 1 second. What is the frequency at which he is turning?

a)

2 Hz

b)

1 Hz

c)

0.5 Hz

d)

20 Hz

105.

The wave machine at a swimming pool oscillates at a frequency of 0.25 Hz. What is the time period of the wave?

a)

25 seconds

b)

0.25 seconds

c)

4 seconds

d)

40 seconds

106.

A dolphin sends out a call to another dolphin at a frequency of 130 Hz. The speed of sound in water is 1400 m/s. What is the wavelength of the wave?

a)

11 m

b)

0.1 m

c)

182 m

d)

101 m

107.

Which of the following statements is true about sound waves?

a)

They can travel through a vacuum.

b)

They require a medium to propagate.

c)

They are longitudinal waves.

d)

They travel faster in air than in water.

108.

What is the unit of measurement for electric current?

a)

Volt

b)

Ohm

c)

Ampere

d)

Watt

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