Directions. Choose the letter of the best answer.
For
questions 1-5, consider the given situation.
Maria
throws a ball straight up with an initial velocity of 10 m/s.
1. What is its
velocity at the highest point?
2. What is its
velocity when it returned to the elevation from where it was thrown?
3. What is its
acceleration at the highest point?
4. What is its
acceleration just before it hits the ground?
5. After 1 second
what is the acceleration of the ball?
A.
0 m/s
B.
0 m/s2
C.
9.8 m/s2
D.
- 9.8 m/s2
E.
10 m/s2
F.
-10 m/s
G.
cannot be determined
6. The initial velocity of
Manuel playing “luksong tinik” has horizontal and vertical components that are
equal in magnitude. What angle does his velocity make with the horizontal?
A. 30° C. 60°
B. 45° D. 90°
7. A sepak takraw that is kicked from a height
of two meters follows a path that is____________.
A.
circular C.
hyperbolic
B.
linear D.
parabolic
8. A goalie made three soccer
punts at 700,
500,
and 300
with varying speeds –all reaching the same maximum heights. Which statement is
correct?
A. All punts have the same hang time
B.
The punt at 700
has the longest hang time
C.
The punt at 500 has
the longest hang time
D.
The punt at 300
has the longest hang time
9. A volleyball is served at a speed of 8.0 m/s
at an angle 35° above the horizontal. What is the speed of the ball when
received by the opponent at the same height?
A.
4.0 m/s C.
9.8 m/s
B.
8.0 m/s D.
16.0 m/s
10.A Batang Pinoy athlete from
your school throws a javelin, always at the same speed, at four different
angles (30°, 40°, 60°, and 80°) above the horizontal. Which two throws cause
the javelin to land the same distance away?
A.
30° and 80° C.
30° and 60°
B.
40° and 80° D.
40° and 60°
For questions 11
and 12, refer to the table below:
11. In the table
above, what is the momentum of the jeepney?
A.
6,000 kg.m/s C. 20,000kg.m/s
B.
40,000 kg.m/s D. 3,000 kg.m/s
12. Which has
greater momentum, the jeepney or the motorcycle?
A.
jeepney C. both have
the same momentum
B.
motorcycle D. cannot be
determined
13. Two identical
cars are travelling along EDSA. Which of the two cars would have a greater
momentum?
A.
the slower car C.
both have the same momentum
B.
the faster car D.
cannot be easily determined
14. A bus and a car are
travelling along EDSA having the same velocity. Which of the two vehicles would
have a greater momentum?
A.
the bus C.
both have the same momentum
B.
the car D.
cannot be easily determined
15. A 25-kg
girl is riding
a 5-kg with
a velocity of
5 m/s the
East. What is
the total momentum of a girl and
a bike together?
A.
100 kg.m/s C.
150 kg.m/s
B.
125 kg.m/s D.
200 m/s
16. Which of the
following is a necessary condition for the total momentum of a system to be
conserved?
A.
Kinetic energy must not change.
B.
No net external force acts on the system.
C.
The system must be at rest.
D.
Only the force of gravity acts on the system.
For
numbers 17 and 18 the given data are: Two 0.5 kg balls approach each other
with
the same speed of 1.0 m/s.
17. What is the
total momentum of the system before collision?
A.
0 C.
1.0 kg.m/s
B.
0.50 kg.m/s D.
-1.0 kg m/s
18. If there is
no external force acting on the system, what the total momentum of the system
after collision?
A.
0 C.
1.0 kg.m/s
B.
0.50 kg.m/s D.
-1.0 kg.m/s
19. Two billiard balls approach
each other with the same speed. If they collide in a perfectly elastic
collision, what would be their velocities after collision?
A.
Zero
B.
Same in magnitude and direction
C.
Same in magnitude but opposite in direction
D.
Different in magnitude and opposite in direction
20. A 50 kg astronaut ejects
100 g of gas from his propulsion pistol at a velocity of 50 m/s. What is his
resulting velocity?
A.
-0.10 m/s C.
0 m/s
B.
-0.50 m/s D.
-100 m/s
21. If a freely falling ball is
somehow equipped with a speedometer, by how much would its speed reading
increase for every second?
A.
0 m/s C.
10 m/s
B.
9.8 m/s D.
20 m/s
22. A sepak takraw
ball is hit vertically upward by a player. What is its acceleration after 1 second?
A.
0 C.
10 m/s
B.
1 m/s D.
-9.8m/s2
23. A volleyball is tossed vertically upward,
with an initial velocity of 5 m/s and caught back at the same level as when it
was thrown. What is the velocity of the ball at that point?
A.
0 m/s C. -9.8 m/s
B. -5 m/s D.
-9.8 m/s2
24. The motion of
an object with constant acceleration is also known as ________.
A.
Motion C. Constant Motion
B.
Uniform Motion D.
Uniformly Accelerated Motion
25. A ball is
thrown vertically upward. What is its instantaneous speed at its maximum height?
A.
0 C. 9.8 m/s
B.
5 m/s D. 9.8 m/s2
26. A fielder throws a softball
to a baseman. Which diagram below shows the force(s) acting on the ball while
it is on air if Fg represents the force of gravity, and Fh refers to the
throwing force?
27. A ball is hit
at an angle of 30o. At what point in its trajectory does this projectile
have the least speed?
A.
Just after it was launched
B.
At the highest point in its flight
C. Just before it hits the ground
D.
halfway between the ground and the highest point
28. Suppose a ping pong ball is
tossed. When the ball reaches the highest point, which statement about the
ball’s velocity and acceleration is true?
A.
Both its velocity and its acceleration are zero
B.
Its velocity is zero and its acceleration is not zero
C. Its velocity is not zero and its acceleration
is zero.
D.
Neither its velocity nor its acceleration is zero.
29. At what angle
should a water hose be aimed in order for the water to land with the greatest
horizontal range?
A. 0° C. 45°
B. 30° D.
60°
30. A ball is hit at an angle
of 30o and it reaches a distance of 50 m. Given the same initial velocity, at
what other angle should a ball be hit to reach the same distance?
A. 15° C. 60°
B. 45° D. 75o
31. Which has
more momentum, a heavy truck moving at 30 km/h or a light truck moving at 30
km/h?
A.
heavy truck C. Both have the same momentum
B.
light truck D.
Cannot be determined.
32. A moderate force will break
an egg. However, an egg dropped on the road usually breaks, while one dropped
on the grass usually doesn’t break. This is because for the egg dropped on the
grass:
A.
The change in momentum is greater.
B.
The change in momentum is less.
C. The time interval for stopping is greater.
D.
The time interval for stopping is less.
33. The impulse
experienced by a body is equal to the change in its:
A.
Velocity
B.
Kinetic energy
C.
Momentum
D.
Potential energy
34. In certain martial arts,
people practice breaking a piece of wood with the side of their bare hand. Use
your understanding of impulse to explain how this can be done without injury to
the hand.
A. Given the same change in
momentum, when the time interval is smaller the impact force is bigger.
B. Given the same change in
momentum, when the time interval is bigger the impact force is bigger.
C. Given the same change in momentum, when the
time interval is smaller the impact force is smaller.
D. Given the same change in
momentum, when the time interval is bigger the impact force is smaller.
35. A lady tennis player hits
an approaching ball with a force of 750 N If she hits the ball in 0.002 s, how
much impulse is imparted to the tennis ball?
A.
0 N s C. 3.0 N s
B.
1.5 N s D. 6.0 N s
36. Which is a
necessary condition for the total momentum of a system to be conserved?
A.
Kinetic energy must not change.
B.
No external force is present.
C.
An object must be at rest.
D.
Only the force of gravity acts on the system.
For
numbers 37 and 38: Two 0.5 kg balls approach each other with the same speed of
1.0 m/s.
37. What is the
total momentum of the system before collision?
A.
0 C.
1.0 kg m/s
B.
0.50 kg m/s D.
-1.0 kg m/s
38. If there is
no external force acting on the system, what the total momentum of the system
after collision?
A.
0 C.
1.0 kg m/s
B.
0.50 kg m/s D.
-1.0 kg m/s
39. Two billiard balls approach
each other at equal speed. If they collide in a perfectly elastic collision,
what would be their velocities after collision?
A.
Zero
B.
Same in magnitude and direction
C.
Same in magnitude but opposite in direction
D.
Different in magnitude and opposite in direction
40. A 50-kg astronaut ejects
100 g of gas from his propulsion pistol at a velocity of 50 m/s. What is his
resulting velocity?
A.
-0.10 m/s C. 0 m/s
B.
-0.50 m/s D.
-100 m/s
This comment has been removed by the author.
ReplyDeleteanswers pls
ReplyDeleteanswers pls
ReplyDeleteExcuse me, maam can i have a answer for this? for reviewal. Thank you!
ReplyDeletePlease send me the answers. I will be using this for reviewer for my kids. Thanks.
ReplyDelete1. C
Delete2. E
3. D
4. G
5. A
6. C
7. D
1. C
ReplyDelete2. E
3. D
4. G
5. A
6. C
7. D
Answer of 8-20 please
DeletePero hindi ko pa alam ang lahat, yan lang muna
ReplyDeleteAnswer nmn po kulang nman para sa kabataan ..guide po ehh
ReplyDelete1. A
ReplyDelete2. F
3. D
4. D
5. D
6. B
7. D
8. A
9. B
10. C
11. C
12. A
13. B
14. A
15. C
16. B
17. A
18. A
19. C
20. A
Papano po naging same ung hang time ng all punts? Need ko lg po ng explanation thankyouuu no.8
DeleteTangina asan sagot?
ReplyDelete21. B
ReplyDelete22. A
23. D
24. C
25. B
26. A
27. C
28. D
29. B
30. A
Asan po yung sagot sa 31 -40??
ReplyDeletecan i ask for the answers ?? just for review purposes
ReplyDeleteWHERE IS THE ANSWER FROM 31 TO 40
ReplyDelete