General physics I reviewer about physical measurement, vectors in two dimensions, newton's laws of motion, momentum and impulse, and work and energy.

1. Johnel V. Esponilla
General Physics I Instructor

2. 1 The units used to measure derived quantities are
known
A. Square units
B. Derived units
C. Base units
D. Scalar units

3. 1 The units used to measure derived quantities are
known
A. Square units
B. Derived units
C. Base units
D. Scalar units
D. Scalar units

4. 2 Which of the following is an SI base unit?
A. current
B. gram
C. Kelvin
D. volt

5. 2 Which of the following is an SI base unit?
A. current
B. gram
C. Kelvin
D. volt
C. Kelvin

6. 3 Which pair contains one vector and one scalar
quantity?
A. Displacement ; acceleration
B. Force ; kinetic energy
C. Momentum ; velocity
D. Power ; speed

7. 3 Which pair contains one vector and one scalar
quantity?
A. Displacement ; acceleration
B. Force ; kinetic energy
C. Momentum ; velocity
D. It acquires a positive charge with the same magnitude as the rod.
D. Power ; speed
C. Momentum ; velocity

8. 4 Which statement includes a correct unit?
A. Temperature = 450 s
B. Force = 3.8 N
C. Momentum = 6.2 Ns
D. Pressure = 4.9 m2

9. 4 Which statement includes a correct unit?
A. Temperature = 450 s
B. Force = 3.8 N
C. Momentum = 6.2 Ns
D. Pressure = 4.9 m2
B. Force = 3.8 N

10. 5 Graphical representation of vectors is a directed line
segment with
A. direction
B. point
C. circle
D. arrowhead

11. 5 Graphical representation of vectors is a directed line
segment with
A. direction
B. point
C. circle
D. arrowhead
D. arrowhead

12. 6 Which of the following is a physical quantity that has a
magnitude but no direction?
A. Vector
B. Resultant
C. Frame of reference
D. Scalar

13. 6 Which of the following is a physical quantity that has a
magnitude but no direction?
A. Vector
B. Resultant
C. Frame of reference
D. Scalar
D. Scalar

14. 7 Identify the following quantities as scalar or vector:
the mass of an object, the number of leaves on a tree,
wind velocity
A. Vector, scalar, scalar
B. Scalar, scalar, vector
C. Vector, scalar, vector
D. Scalar, vector, vector
B. Scalar, scalar, vector

15. 8 An ant on a picnic table travels 3.0 x 101 cm eastward,
then 25 cm northward, and finally 15 cm westward.
What is the magnitude of the ant’s displacement
relative to its original position?
A. 29 cm
B. 57 cm
C. 70 cm
D. 52 cm
A. 29 cm
Distance vs. displacement
Distance = total position, scalar
Displacement = shortcut, vector
Displacement =?
Pythagorean : c2 = a2 + b2
c2 = (15 cm)2 + (25 cm)2
c2 = 225 cm2 + 625 cm2
c2 = 850 cm2
c = 29.15 cm
c = 29 cm
15 cm
25 cm
? cm

16. 9 For the winter, a duck flies 10.0 m/s due south against
a gust of wind with a speed of 2.5 m/s. What is the
resultant velocity of the duck?
A. -7.5 m/s south
B. 7.5 m/s south
C. 12.5 m/s south
D. -12.5 m/s south
B. 7.5 m/s south

17. 10
A rock is thrown straight up from the edge of a cliff.
The rock reaches the maximum height of 15 m above
the edge and then falls down to the bottom of the cliff
35 m below the cliff. What is the travel distance of the
rock?
A. 30 m
B. 35 m
C. 50 m
D. 65 m
D. 65 m

18. 11 Can an object’s average velocity equal zero when
object’s speed is greater than zero?
A. Yes, when the object moves in a straight line at a constant rate
B. Yes, when the object returns to its original position
C. No, it is impossible because they are always equal
D. No, it is impossible because the magnitude of the velocity is
always greater than speed
B. Yes, when the object returns to its original position

19. 12 A car accelerates from rest at a constant rate 5 m/s/s.
Which of the following statements is TRUE?
A. The car travels 5 m in every second
B. The car decreases its velocity 5 m/s in every second
C. The car increases its velocity 5 m/s in every second
D. The car’s velocity doesn’t change
C. The car increases its velocity 5 m/s in every second

20. 13 A bicyclist moves a long a straight line with an initial velocity
v0 and slows down. Which of the following BEST describes
the signs set for the initial position, initial velocity, and the
acceleration?
A. Positive, positive, negative
B. Negative, positive, negative
C. Negative, negative, positive
D. Negative, negative, negative
C. Negative, negative, positive
Initial position = negative, since bicyc
starting position is -10
Initial velocity = negative, v = d/t
x = -10 m , t = 0 s, xf = -15 m, t = 5
v = -15m – (-10m) / 5s = -5 m / 5 s = -1
negative
x = -15 m, t = 5s, xf = -20 m, t = 8 s
v = -20 – (-15) / 5s = -5m / 3 s = -1.67
Acceleration = ? , a = (vf - vi)/t
vi = -1 m/s, vf = -1.67 m/s, t = any seco
a = v/t = -1.67 m/s – (-1 m/s) / any seco
a = -0.67 m/s/s

21. 14 Changes in motion are caused by:
A. Unbalanced forces
B. Balanced forces
C. Mass
D. Inertia
A. Unbalanced forces

22. 15 Newton’s third law of motion involves:
A. One force acting on one object
B. A force pair acting on two different objects
C. A force pair acting on one object
D. Unbalanced forces acting on many objects
B. A force pair acting on two different objects

23. 16
A book rests on a table. The force of
gravity pulls down on the book with a
force of 20 N. What prevents the book
from accelerating downward at 9.8 m/s/s?
A. The table presses back up on the book with an equal and opposite
force of 20 N.
B. The table presses back up on the book with a force greater than 20
N.
C. The table and the book together are accelerating downwards at 9.8
m/s/s.
D. The inertia of the book holds it up.
A. The table presses back up on the book with an equal and opposite
force of 20 N.

24. 17 The amount of matter in an object is called
its weight.
TRUE
FALSE
FALSE

25. 18 If a hockey puck slides on a perfectly
frictionless surface, it will eventually slow
down because of its inertia.
TRUE
FALSE
FALSE

26. 19 The combination of all the forces that act
on an object is called net force.
TRUE
FALSE
TRUE

27. 20 A block of mass m is pulled over a distance by an applied force F
which is directed in parallel to the displacement. How much
work is done on the block by the force F?
A. mFd
B. zero
C. Fd
D. -Fd
C. Fd

28. 21 A block of mass m is moved over a distance. An applied force F is
directed perpendicularly to the block’s displacement. How much
work is done on the block by the force F?
A. mFd
B. zero
C. Fd
D. -Fd
B. zero

29. 22 A truck driver is trying to push a loaded truck with an applied
force. Unfortunately, his attempt was unsuccessful the truck stays
stationary no matter how hard the driver pushes. How much
work is done by the driver?
A. mFd
B. zero
C. Fd
D. -Fd
B. zero

30. 23
The force as a function of displacement of
a moving object us presented by the graph.
How much work is done when the object
moves from 0 m to 8 m?
40 J

31. 24 The law of conservation of momentum
states that,
A. p before is less than p after
B. p before is more than p after
C. p before is the same as p after
D. p is undefined
C. p before is the same as p after

32. 25 A 0.250 kg cart moving at 0.400 m/s has
how much momentum?
0.1 kg m/s

33. 26 If 2 objects collide and stick together, what
will happen to their velocities?
Velocities will
decrease

34. 27
A 10 kg toy truck moves at 5 m/s East. It
collides head-on with a 5 kg toy car
moving 10 m/s moving West. What is the
total momentum of the system?
0 kg m/s

35. 28 When the speed of an object is doubled, its
momentum
doubles

36. 29 A 2 kg cart has a momentum of 16 kg m/s.
What is its velocity?
8 m/s