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WorksheetsPhysics Examination I
Total questions: 50
Worksheet time: 24mins
The SI base unit for mass is:
Gram
Pound
Kilogram
Ounce
Kilopound
A gram is:
10-6 kg
10-3kg
1kg
103kg
106kg
A particle moves along X-axis from Xi to Xf. Of the following values of the initial and final coordinates, which results in the displacement with the largest magnitude?
Xi =4m, Xf=6m
Xi= -4m, Xf=-8m
Xi=-4m, Xf =2m
Xi = 4m, Xf =-2m
Xi = -4m, Xf = 4m
A car starts from rest and goes down a slope with a constant acceleration of 5 m/s2. After 5 s the car reaches the bottom of the hill. Its speed at the bottom of the hill, in m/s, is:
1
12.5
25
50
160
Velocity is defined as:
rate of change of position over time
position divided by time
rate of change of acceleration with time
a speeding up or slowing down
change of position
Acceleration is defined as:
rate of change of position over time
speed divided by time
rate of change of velocity over time
change of velocity
change in displacement over time
Which of the following is a scalar quantity?
Speed
Velocity
Displacement
Acceleration
None of these
Which of the following is a vector quantity?
Mass
Density
Speed
Temperature
None of these
Which of the following is NOT an example of accelerated motion?
Vertical component of projectile motion
Circular motion at constant speed
A swinging pendulum
Earth’s motion about sun
Horizontal component of projectile motion
A ball is vertically thrown into the air, as it rises what is the direction of its velocity?
positive
negative
Zero
g, down
g, up
A baseball is thrown vertically into the air. The acceleration of the ball at its highest point is:
zero
g, down
g, up
2g, down
2g, up
A freely falling body has a constant acceleration of 9.8 m/s2. This means that:
the body falls 9.8 m during each second
the body falls 9.8 m during the first second only
the speed of the body increases by 9.8 m/s during each second
the acceleration of the body increases by 9.8 m/s2 during each second
the acceleration of the body decreases by 9.8 m/s2 during each second
An object is thrown vertically upward at 35 m/s. Taking g = 10 m/s2, the velocity of the object 5 seconds later is:
7.0 m/s, up
15 m/s, down
15 m/s, up
85 m/s, down
85 m/s, up
Neglecting the effect of air resistance, a stone dropped off a 175-m high building lands on the ground in:
3 s
4 s
6 s
18 s
36 s
For a projectile, what is the acceleration in the x-direction?
it depends on the initial velocity
it depends on how long it is in the air
0 m/s2
it depends on y-acceleration
None of these
A bullet is fired horizontally from a gun. At the same time a similar bullet is dropped from the same height. The fired bullet will:
hit the ground first
hit at the same time as the dropped bullet
hit the ground second
never hit the ground
None of these
A toy car moves 8 m in 4 s at the constant velocity. What is the car’s velocity?
1 m/s
2 m/s
3 m/s
4 m/s
5 m/s
A plane flies 300 km due north, then 400 km dues east. What is the magnitude of its displacement?
100 km
500 km
700 km
1 000 km
1500 km
A 10-kg weight and a 100-kg weight of the same size are dropped from the roof of a building. Which will hit the ground first?
they will hit at the same time
the 10-kg weight
the 100-kg weight
cannot be determined from given information
None of these
A train moves at a constant velocity of 50 km/h. How far will it move in 0.5 h?
10 km
20 km
25 km
45 km
50 km
The maximum horizontal distance that a projectile travels is called:
(a)
The path of a projectile through the air is called:
(a)
The location of an object at a particular time is called:
(a)
The state of movement that results from gravitational force only
(a)
Acceleration in the opposite direction of velocity is called:
(a)
The interval over which change occurs is called
(a)
The vector sum of two or more vectors is called:
(a)
The total length of the path traveled between two positions is called:
(a)
The study of the description of motion of an object is called:
(a)
A vector that has a magnitude of exactly one and points in a particular direction is called:
(a)
It is the magnitude of displacement:
(a)
What is the net force when an object is at rest is called:
(a)
It is how fast an object moving at a given instant
(a)
Evaluate i.i
(a)
Evaluate j x k.
(a)
Evaluate k x j.
(a)
Evaluate k.j
(a)
Evaluate k.k
(a)
Evaluate j x i.
(a)
How many significant figures are there in 4000.1?
2
5
6
3
How many significant figures are there in 0.000000023
(a)
How many significant figures are there is 10000000101000010?
15
16
17
14
13
Applying the rules in calculating significant figures: What is 12.5 x 3.5?
43.75
44
43.7
43.750
44.0
Applying the rules in calculating significant figures. What is 10.0033 + 1.55?
11.55
12
11.5533
11.553
11.6
The one that can be measured and consists of magnitude and unit is called?
(a)
The measure of spatial extent in a particular direction, such as height, width, thickness or depth.
(a)
It states that "the equation is dimensionally correct if the dimensions on the left hand side of the equation are equal to the dimensions on the right hand side of the equation"
(a)
A motion wherein a body is affected by gravity alone.
(a)
It is the reference used as the standard measurement of physical quantity
(a)
True or False. All digits with zeros preceding a decimal fraction are significant.
(a)
