aMurtazDanish ame :

[Total 15 Marks]

Date :................................................................................ Class: CI

Dedicated to Mohammad Irtaza Haider Zain. Code 5054

Test (Unit 1-7)UNIQUE SCIENCE ACADEMY

N Paper: Physics

Time Allowed: 35Minutes Maximum Marks: 25

1

Theory Section:

[Turn over

On Fig. 1.1, draw

Fig. 1.1

bus to the top of the slope at a constant speed. Fig. 1.1 shows the passengers exerting a 1 A bus breaks down on a road with a 10° upward slope. The passengers get out and push the

force on the bus parallel to the line of the slope.

(a) The total mass of the bus is 3200 kg.

(i) Calculate the weight of the bus.

weight = ..................................................... [1]

(ii) two arrows to show the direction of the weight of the bus and the direction of the force exerted on the bus by the passengers. [1]

(iii) The total force exerted by the passengers on the bus is 17 000 N along the line of the slope. Use a graphical method to determine the size and direction of the resultant of this force and the weight of the bus. State the scale used.

scale = ...........................................................

size of resultant = ...........................................................

direction of resultant = ...........................................................[4]

[Total 15]

2

Dedicated to Mohammad Irtaza Haider Zain. Code 5054 [Turn over

Fig. 1.2

On the axes of Fig. 1.2, sketch the distance-time graph for the bus from a time

(iv) The bus travels at a constant speed. State the size of the resultant of all the forces acting on the bus.

.............................................................................................................................. [1]

(b) As the passengers push the bus up the slope, work is done against two forces. State the names of these two forces and, for each force, state the form of energy produced as work is done.

force 1 ..............................................................................................................................

form of energy 1 ...............................................................................................................

force 2 ..............................................................................................................................

form of energy 2 ...............................................................................................................[4]

(c) When the bus reaches the top of the slope, it stops and the passengers get back in.

(i) when the passengers are pushing the bus at constant speed until they get back into the stationary bus.

[3]

(ii) State how the speed of a moving object may be obtained from an accurately drawn distance-time graph.

..................................................................................................................................

.............................................................................................................................. [1]

3

Dedicated to Mohammad Irtaza Haider Zain. Code 5054 [Turn over

10 MCQ SECTION: [Total Marks]

2

1 A small stone is dropped from the top of a ladder, falls and hits the ground. It does not rebound.

Which speed-time graph is correct?

0

speedof stone

time

A

0

speedof stone

time

B

0

speedof stone

time

C

0

0 0

0 0

speedof stone

time

D

Vernier calipers are shown with the jaws closed.

0 1 2 cm

vernier scale

jaws closed

What is the zero error?

A 0.04cm B 0.05cm C 0.14cm D 0.15cm

6

5

4

3

4

Dedicated to Mohammad Irtaza Haider Zain. Code 5054 [Turn over

What affects the stability of an object?

A only its base area

B only its base area and the location of its centre of mass

C only its weight and its base area

D only the location of its centre of mass

A person of weight 600 N at the bottom of a mountain climbs to the top. The gravitational field strength changes from 10.00 N / kg at the bottom to 9.97 N / kg at the top. His mass is unchanged as he climbs.

What are his mass and his weight at the top of the mountain?

mass at top of mountain / kg

weight at top of mountain /N

A 60.0 598

B 60.0 600

C 60.1 598

D 60.1 600

A box has an internal volume of 1000 cm3. When a solid object is placed in the closed box, the volume of air in the box is 520cm3.

The density of the object is 8.00g / cm3.

air

solidobject

What is the mass of the object?

A 60.0g B 3840g C 4160g D 8000g

A small emergency generator supplies 432 000 000J of electrical energy in twenty-four hours.

What is the average power output of the generator?

A 5000W

B 300 000W

C 18 000 000W

D 432 000 000W

9

8

7

5

Dedicated to Mohammad Irtaza Haider Zain. Code 5054 [Turn over

A parachutist has opened his parachute and is falling to Earth at constant speed.

What is the principal energy conversion taking place as he falls?

A kinetic energy → potential energy

B kinetic energy → thermal energy (heat)

C potential energy → kinetic energy

D potential energy → thermal energy (heat)

Which part of the graph shows the limit of proportionality for an elastic solid?

extension

load0

0

P

Q

O

A O B OP C P D PQ

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

10

6

Dedicated to Mohammad Irtaza Haider Zain. Code 5054

A crane moves its load diagonally, as shown.

By which distance must the weight of the load be multiplied in order to find the increase ingravitational potential energy of the load?

load

D

C

B

A

10 A B C D

9 A B C D

8 A B C D

7 A B C D

6 A B C D

5 A B C D

4 A B C D

3 A B C D

2 A B C D

1 A B C D

MCQ Answer Sheet