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WorksheetsSecond Periodical test- Review
Total questions: 40
Worksheet time: 24mins
Which of the following quantities remains constant during vertical free fall (neglecting air resistance)?
Velocity
Acceleration
Displacement
Speed
A baseball is thrown up into the air. What happens to the velocity as the ball rises in the air?
the velocity increases
the velocity decreases
the velocity remains constant
If an object is in free fall for three seconds, how fast will it be falling?
9.8 m/s
19.6 m/s
29.4 m/s
39.2 m/s
A free falling objects falls under the influence of the
force of air
force of gravity
force of resistance
net force
What is acceleration of an object flying upward during free fall?
+ 9.8 m/s2
- 9.8 m/s2
+ 9.8 m/s
-9.8 m/s
Which of the following can help answer this problem?
"An automobile with an initial speed of 4.30 m/s accelerates uniformly at the rate of 3.0 m/s2. Find the final speed after 5.0 s."
Δx = v0t + 21 at 2
vf2 = v02 + 2a Δx
vf = v0 + at
v = tΔx
A paint brush is dropped from the top of a tall ladder and free falls to the ground. What changes, if any, would be observed of the velocity and the acceleration of the brush as it falls? Pick 2 answers.
The velocity increases.
The velocity decreases.
The velocity remains a constant value.
The acceleration changes (increases or decreases).
The acceleration remains a constant value.
An object free falls for 3.5 seconds. How far does it fall?
120.05 m
60.03 m
17.15 m
34,3 m
What do you expect about the horizontal velocity of a projectile? (neglecting air resistance)
The horizontal velocity is constant.
The horizontal velocity varies with time.
The horizontal velocity is zero.
The horizontal velocity varies with mass.
What is the vertical velocity of a projectile at the peak of travel?
0 m/s
0 s2m
9.8 s2m
−9.8 s2m
Which of the following statements is NOT true?
The horizontal acceleration is always zero.
Vertical acceleration of a projectile is constant.
Horizontal and vertical components of projectile are dependent on each other.
Horizontal and vertical components of projectile are independent on each other.
What is the acceleration of a sepak takraw ball after one second and hit vertically upwards by a player?
0sm
0s2m
9.8s2m
−9.8s2m
The object that is thrown is called a projectile, and its path is called ________.
Circular
Parabolic
Hyperbolic
Trajectory
Free fall is condidered:
Horizontal Motion
2 Dimension Motion
Vertical Motion
an accident
In a vertical motion, what does positive velocity mean?
That is constant
A body moving downwards
A body moving upwards
That is a constant displacement
What does the "y" represents in the follwing formula ?
Vf 2 = Vi2 + 2ay
Velocity in the y axis
displacement
inertia
air resistance
What does a negative velocity represent?
A body is moving downwards.
A body is moving upwards.
A body is going to the west.
A body is decreasing it's velocity.
What factor(s) affect(s) how far a projectile will land?
A. Angle of launch
B. Initial velocity
C. Both angle and initial
velocity
D. None of the above
A baseball player throws a ball horizontally (at an angle of 0 degrees). Which statement best describes the
ball’s motion after it is thrown? (Neglect air resistance)
A. Its vertical speed
remains the same, and
its horizontal speed
remains the same.
B. Its vertical speed
increases, and its
horizontal speed
increases.
C. Its vertical speed
increases and its
horizontal speed
remains the same.
D. Its vertical speed
increases and its horizontal speed decreases
Which of the following quantities remains constant throughout projectile motion?
A) Horizontal velocity
B) Vertical velocity
C) Acceleration
D) Total velocity
In projectile motion, when is the vertical velocity zero?
A) At the highest point of the trajectory.
B) At the lowest point of
the trajectory.
C) At the initial launch.
D) Vertical velocity is
never zero.
A ball is dropped from rest from a building 35.0 m high. If air resistance is neglected, then the ball will hit the ground with a speed of
8.4 m s-1
13.1 m s-1
18.5 m s-1
26.2 m s-1
READ CAREFULLY!
An object is dropped from a cliff. How far does the object fall in the third second? Assume that g = 10 m s-2
20 m
25 m
35 m
45 m
What role does gravity play in the trajectory of an object in projectile motion?
Determines the firing angle.
Affects the initial speed.
Causes the object to curve downward.
Has no effect on the trajectory.
How does changing the mass of an object affect its projectile motion if air resistance is neglected?
It has no significant effect on height.
It decreases the maximum height.
It increases the maximum height.
It increases the range.
How does increasing the firing angle affect the range of a projectile?
Increases the range.
Decreases the range.
No effect on the range.
Increases the maximum height but decreases the range.
If a projectile is launched with an initial speed of 20 m/s at an angle of 45 degrees above the horizontal, what is its maximum height above the launch point?
10 meters
20 meters
30 meters
40 meters
A cannonball is fired from a cannon with an initial speed of 30 m/s at an angle of 30 degrees above the horizontal. What is the horizontal range of the cannonball? (Neglect air resistance)?
60 meters
90 meters
120 meters
150 meters
Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. Which will hit the ground farther from the base of the cliff?
A
B
Both at the same distance
A soccer ball is kicked 24.5 m/s at an angle of 35⁰ above the ground. What is its maximum height?
17.2 m
23.5m
10.1 m
0 m
