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first term - first unit test - 3rd prep
first term - first unit test - 3rd prep
نسخ
تكرار
اختبار خاص بالمعلم:
Heba abdelzaher
إسمك
صفك
مدة الاختبار:
0:00:20
الوقت المتبقي:
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1
The concept of the body movement means..........
constancy of its position with the change in time.
the change in its position with the time.
its speed.
its acceleration.
2
For a car moves at a regular speed, the ratio d/t...........
increases.
decreases.
is constant.
is doubled.
3
All of the following are scalar quantities except..........
mass.
force.
time.
length.
4
The two factors which can be used to describe the motion of a body are the..........
speed and time.
displacement and speed.
distance and time.
area and time.
5
From the examples of the scalar physical quantities are..........
the mass and the velocity.
the time and the speed.
the time and the weight.
the length and the acceleration.
6
Speed equals.......
distance ÷ time.
distance + time
distance x time.
distance - time
7
From the examples of the scalar quantities is the..........
force.
mass.
velocity.
acceleration.
8
If the body moves from rest at a uniform acceleration, so its final speed is determined from the relation..........
V1/Δt
a/Δt
a×Δt
d/Δt
9
When a moving object covers equal distances in equal periods of time. this means that the body moves with...........
uniform acceleration.
uniform speed.
average speed.
relative speed.
10
When an object speed increases, the movement is described as........
uniform speed.
decelerating motion.
zero acceleration.
accelerating motion.
11
......... is a vector quantity measured in m/sec.
Velocity
Acceleration
Speed
Displacement
12
If the uniform speed of a car is 72 km/h so. its speed (in m/s) equals..........
20 m/s.
40 m/s.
18 m/s.
25 m/s.
13
The object moves at a constant uniform speed, this means that..........
it covers equal distances at unequal time intervals.
it covers unequal distances at equal time intervals.
it moves at constant acceleration.
it moves at zero acceleration.
14
Displacement is a.........
scalar quantity and its unit is metre.
vector quantity and its unit is kilogram.
vector quantity and its unit is m/sec.
Vector quantity and its unit is metre.
15
A car moves at a regular speed equals 90 km/h, this means that the car covers a distance equals......... metres in 40 sec.
1000
1500
2000
4000
16
Acceleration measurement unit is...........
meter.sec
meter. sec²
meter/sec
meter/sec²
17
A body moved a distance of 20 metres in a straight line in the same direction so, the amount of its displacement is.........
40 m
20 m
80 m
120 m
18
speed equals 2 m/s. Which of the following equals the distance between his home and the school?..........
1.2 km.
48 m.
84 m.
3.6 km.
19
The ratio between the final speed and the initial speed of an object moving in a straight line in a decelerating motion (a negative acceleration) is ...........
equal to zero.
more than one.
equal to one.
less than one.
20
Measurement unit of velocity is.............
m/sec²
m/sec.
m.
m.sec.
21
A runner ran the 1st 100 metres of a race in 8 seconds and the 2nd 100 metres in 12 seconds therefore, his average speed during the whole race is.........
8 m/s
10 m/s
12 m/s
20 m/s
22
The plane which flies against the wind direction........ than that which flies in the same direction of wind.
consumes more fuel
takes longer time
takes longer time and consumes more fuel
its speed increases
23
If the relative speed of a car is 50 km/h relative to an observer in a bus moves obs. in the same direction at 70 km/h, therefore the actual speed of this car is........
50 km/h.
40 km/h.
90 km/h.
120 km/h.
24
When car (A) covers the same distance as car (B) at the same time, this means that...........
car (A) is slower than car (B).
car (B) is slower than car (A).
car (A) is faster than car (B).
the two cars move at the same speed.
25
(Distance-time) graph for a regular motion at a constant speed is a...........
straight line passing through the origin point.
straight line parallel to time axis.
straight line cuts the time axis and the distance axis.
straight line parallel to the distance axis.
26
The scalar quantity is identified by its...........
magnitude and velocity.
magnitude only.
direction only.
magnitude and direction.
27
When car (A) covers smaller distance than car (B) at the same time span, therefore...........
car (A) is faster than car (B).
car (B) is faster than car (A).
the two cars move at the same speed.
there is no correct answer.
28
To determine the length, mass and time, we must know.........
the magnitude and the measuring unit.
the direction and the measuring unit.
the magnitude, the direction and the measuring unit.
the magnitude and the direction.
29
The distance covered by a moving body through a unit time is called the......... of the object.
weight
density
motion
speed
30
Which of the following physical quantities are considered as scalars only?..........
The force and the time.
The radius and the area.
The displacement and the acceleration.
The mass and the force.
31
Speed measurement unit is...........
No correct answer
Jolie
metre/second
metre.second.
32
.......... is the physical quantity that both its magnitude and direction are necessary for identifying it.
No correct answer
Scalar quantity
Vector quantity
The quantity of matter
33
The uniform acceleration means that the object speed......... by equal values through equal periods of time.
increases or decreases
increases only
decreases only
doesn't change
34
If the speedometer of a moving car points to 90 km/h, therefore after two hours the car covers..........
180km
90m
90km
180m
35
Acceleration is a...........
vector quantity whose unit is m/s
vector quantity whose unit is m/s²
scalar quantity whose unit is m/s²
scalar quantity whose unit is m/s²
36
A car moves at a speed 30 m/sec., then its speed changes to 60 m/sec. after three seconds so, the acceleration at which the car moves is.........
30 m/sec
20 m/sec²
10 m/sec
10 m/sec²
37
When the body covers equal distances at unequal intervals of time, this means that the body moves at.......
decreasing acceleration.
uniform speed.
increasing acceleration.
non-uniform speed.
38
If a boat starts to move from rest till its speed becomes 2.5 m/sec. through 0.5 sec. so, the acceleration of the moving boat is..........
5 m/sec²
25 m/sec²
16 m/sec²
22 m/sec²
39
The distance that is covered by a body in a certain direction is called.........
velocity.
displacement.
acceleration.
distance.
40
In case of motion that is described as movement at irregular speed, in this case, it is useful to refer to another term which is the........ speed.
average
scalar
vector
uniform
41
The ratio between the final speed and the initial speed of an object moves at an accelerating motion is...........
equal to zero
equal to 1
more than 1
less than 1
42
........... is considered from the fastest wild animals.
Cheetah
Lion
Wolf
Elephant
43
A car moving on a straight line covers a total distance (d) in a total time (t), the average speed of the car is given by........
V= t/d
V= h/km
V= dt
V= d/t
44
Movement is at a uniform acceleration...........
if the average speed equals the regular speed.
if the object's speed changes at equal values in equal time intervals.
if the distance that the object covers changes at equal values in equal time intervals.
no correct answer.
45
The average velocity is determined by the relation.........
displacement/time.
distance/time.
distance x time.
speed/time.
46
The speed of a moving object relative to an observer in another moving object is called ......... speed.
relative
average
uniform
irregular
47
Decelerating motion means the........
object speed increases by time.
object is at rest.
object speed is constant.
object speed decreases by time.
48
The shortest length covered by the object in a fixed direction is called........
speed
distance.
displacement.
acceleration.
49
Acceleration is the.........
no correct answer.
change in speed in a unit time.
rate of change of distance relative to the speed.
change in distance in a unit time.
50
If car (A) moves at speed 80 km/h and car (B) moves at speed of 50 km/h in the same direction, the speed of car (A) relative to a passenger in car (B) is ........... km/h.
60
110
30
90
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