1 A cylindrical can is rolled along the ruler shown in the diagram.

0 cm 5 10 15 20 25 30 cm

starting position final position

can rolled

mark on

can

The can rolls over twice.

What is the circumference (distance all round) of the can?

A 13 cm B 14 cm C 26 cm D 28 cm

2 Before marking the finishing line on a running track, a groundsman measures out its 100 m length.

Which instrument is the most appropriate for this purpose?

A measuring tape

B metre rule

C 30 cm ruler

D micrometer

3 A quantity is quoted as having a value of 6.2 ms.

In what units is it measured?

A metres

B metres per second

C microseconds

D milliseconds

Maryia International School, Jubail

Work Sheet P2 MCQs Topic: Measurements, Density & Speed, velocity and accleration

Name ...................................... Level 8 Sec.......... Date........................

Physics

1

4 A manufacturer measures accurately the dimensions of a wooden floor tile.

The approximate dimensions of the tile are shown.

width 0.08 m

length 0.4 m thickness 0.005 m

Which instruments are used to measure accurately each of these dimensions?

length thickness width

A metre rule micrometer vernier calipers

B metre rule vernier calipers micrometer

C micrometer metre rule vernier calipers

D vernier calipers micrometer metre rule

5 The diagram shows four identical spheres placed between two wooden blocks on a ruler.

cm

wooden block

sphere

0 5 10 15

What is the diameter of one sphere?

A 1.0 cm B 2.0 cm C 3.0 cm D 4.0 cm

6 A 1 kg sample of aluminium is stored in a laboratory. In a different laboratory, in the same town,

there is a 1 kg sample of iron.

Which quantity must these two samples always have in common?

A the same density

B the same temperature

C the same volume

D the same weight

2

7 The diagram shows a micrometer scale.

Which reading is shown?

A 5.64 mm B 7.14 mm C 7.16 mm D 7.64 mm

0 520

15

10mm

8 What is the reading on this micrometer?

0 5

mm

20

15

10

5

A 5.43 mm B 6.63 mm C 7.30 mm D 8.13 mm

9 A micrometer is used to measure the diameter of a uniform wire.

wire

screw

rotating scale

fixed scale

What is done to obtain an accurate answer?

A Find the reading and add or subtract the zero error.

B Make the micrometer horizontal.

C Subtract the fixed scale reading from the rotating scale reading.

D Subtract the rotating scale reading from the fixed scale reading.

3

A stone has a volume of 0.50 cm3 and a mass of 2.0 g.

What is the density of the stone?

A 0.25 g / cm3

B 1.5 g / cm3

C 2.5 g / cm3

D 4.0 g / cm3

11 A cube of side 2.0 cm is placed on a balance.

2.0 cmbalance

7.2 g

What is the density of the cube?

A 0.90 g / cm3

B 1.2 g / cm3

C 1.8 g / cm3

D 3.6 g / cm3

12 In a laboratory on Earth, balances show that an object has a mass of 2 kg and a weight of 20 N.

The same balances and object are then taken to the Moon, where the gravitational field strength isless than on the Earth.

Are the mass and weight of the object the same, or less, than before?

mass weight

A less less

B less same

C same less

D same same

13 Ten identical steel balls, each of mass 27 g, are immersed in a measuring cylinder containing20 cm3 of water.

The reading of the water level rises to 50 cm3.

What is the density of the steel?

A 0.90 g/cm3 B 8.1 g/cm3 C 9.0 g/cm3 D 13.5 g/cm3

10

4

14 A measuring cylinder containing some water stands on a scale pan. A solid ball is lowered into the water.

The water level rises from the 30 cm3 mark to the 40 cm3 mark.

The scale reading increases from 100 g to 180 g.

100 g 180 g

30 cm3 mark

40 cm3 mark

What is the density of the material of the ball?

A 2.0 g / cm3 B 4.5 g / cm3 C 8.0 g / cm3 D 18 g / cm3

15 An object of mass 100 g is immersed in water as shown in the diagram.

100

90

80

70

60

50

40

30

20

10

cm3 100

90

80

70

60

50

40

30

20

10

cm3

What is the density of the material from which the object is made?

A 0.4 g / cm3

B 0.9 g / cm3

C 1.1 g / cm3

D 2.5 g / cm3

16 A stone has a mass of 390 g and a density of 2.7 g / cm3.

Cooking oil has a density of 0.90 g / cm3.

Which mass of oil has the same volume as the stone?

A 130 g B 160 g C 900 g D 1200 g

5

17 What must change when a body is accelerating?

A the force acting on the body

B the mass of the body

C the speed of the body

D the velocity of the body

18 Which of the following defines acceleration?

change in velocityA ––––––––––––––

time taken

change in speedB –––––––––––––

time taken

change in distanceC –––––––––––––––

time taken

change in distance in a fixed directionD ––––––––––––––––––––––––––––––

time taken

19 Which quantity X is calculated using this equation?

X = taken time

velocity in change

A acceleration

B average velocity

C distance travelled

D speed

20 A student measures the speed of a trolley. At one instant, the speed of the trolley is 1.0 m / s and

two seconds later the speed is 4.0 m / s.

What is the acceleration of the trolley?

A 1.5 m / s2 B 2.0 m / s2 C 2.5 m / s2 D 5.0 m / s2

`21 An object moves from P to Q in 10 s with uniform acceleration.

velocity at P = 5 m / s

velocity at Q = 12 m / s

What is the acceleration?

A 0.5 m / s2 B 0.7 m / s2 C 1.2 m / s2 D 1.7 m / s2

6

22 The diagram shows a speed-time graph for a body moving with constant acceleration.

What is represented by the shaded area under the graph?

A acceleration

B distance

C speed

D time

speed

time0

0

23 An object moves initially with constant speed and then with constant acceleration.

Which graph shows this motion?

0 0

0 0 0

0

00

speedspeed

speed

timetime

time

A B

C D

time

speed

7

24 The graph shows the speed of a car as it accelerates from rest.

During part of this time the acceleration is uniform.

What is the size of this uniform acceleration?

A 5 m/s2 B 6 m/s2 C 10 m/s2 D 20 m/s2

00 1 2 3 4 5 6

5

10

15

20

25

30speedm / s

time / s

25 The graph shows the movement of a car over a period of 50 s.

0 10 20 30 40 50 60

10

5

speed

m / s

time / s

0

What was the distance travelled by the car while its speed was increasing?

A 10 m B 20 m C 100 m D 200 m

26 A small steel ball is dropped from a low balcony.

Ignoring air resistance, which statement describes its motion?

A It falls with constant acceleration.

B It falls with constant speed.

C It falls with decreasing speed.

D It falls with increasing acceleration.

8

27 The speed-time graph shows the movement of a car.

00

speed

time

What does the shaded area of the graph represent?

A the average acceleration of the car

B the average speed of the car

C the total distance travelled by the car

D the total travelling time of the car

28 The graph shows how the speed of a car travelling in a straight line changes with time.

Which section shows the largest acceleration?

00 time

speed

A

BC

D

29 A table-tennis ball is released from the top of an evacuated tube.

ball

vacuum

Which graph shows how the speed of the ball changes with time as it falls to the bottom of the tube?

A

speed

time00

B

speed

time00

C

speed

time00

D

speed

time00

9

30 A student drops a table-tennis ball in air.

What happens to the velocity and to the acceleration of the ball during the first few seconds after release?

velocity acceleration

A decreases decreases

B decreases increases

C increases decreases

D increases increases

31 An object is falling under gravity with terminal velocity.

What is happening to its speed?

A It is decreasing to a lower value.

B It is decreasing to zero.

C It is increasing.

D It is staying constant.

32 Two men jump out of an aeroplane at the same time. One of the men opens his parachute and the other man remains in free-fall.

Why is the man in free-fall moving faster than the parachutist?

A The man in free-fall experiences greater air resistance.

B The man in free-fall has a greater mass.

C The parachutist experiences greater air resistance.

D The parachutist has not reached terminal velocity.

10

33 A skydiver falls from rest through the air and reaches terminal velocity.

What is the acceleration of the skydiver during his fall?

A constant at 0 m / s2

B constant at 10 m / s2

C starting at 0 m / s2 and increasing to 10 m / s2

D starting at 10 m / s2 and decreasing to 0 m / s2

34 An object falls from rest through the air and the air resistance on it increases. The object reaches terminal velocity.

Which quantity decreases until its terminal velocity is reached?

A acceleration

B kinetic energy

C speed

D weight

35 The graph shows how the height of an object above the ground changes with time.

0 0.5 1.0 1.5 2.0 2.5

4

3

2

1

0

height above

ground / m

time / s

What is the terminal velocity?

A 1.0 m / s B 1.3 m / s C 1.6 m / s D 2.0 m / s

11

The speed-time graph shown is for a bus travelling between stops.

Where on the graph is the acceleration of the bus the greatest?

speed

time

A

B

C

D

Two distance / time graphs and two speed / time graphs are shown.

Which graph represents an object that is at rest?

A

distance

time

B

distance

time

C

speed

time

D

speed

time

00

00

00

00

36

37

12

An object moves initially with constant speed and then with constant acceleration.

Which graph shows this motion?

0 0

0 0 0

0

00

speedspeed

speed

timetime

time

A B

C D

time

speed

38

39 The speed-time graph shows the motion of a car.

00

speed

time

P

Q R

Which row describes the motion?

between P and Q between Q and R

A accelerating moving at constant speed

B accelerating not moving

C moving at constant speed decelerating

D moving at constant speed not moving

13

The graph shows how the speed of a car changes with time.

speed

U V W X Y time

0

Between which two times is the car stationary?

A U and V B V and W C W and X D X and Y

40

14