MYP Physics Kinematics, Metric System, Scientific

Notation, and Significant Figures

Practice Quiz

Solutions

A person walks south 3 km then west 4 km. Determine the person’s

1. Distance: a. 3 km b. 4 km c. 5 km d. 7 km

(distance = 3 + 4 = 7 km)

2. Displacement: a. 3 km b. 4 km c. 5 km d. 7 km

3 km

4 km

𝒅𝒊𝒔𝒑𝒍𝒂𝒄𝒆𝒎𝒆𝒏𝒕 = 𝟑𝟐 + 𝟒𝟐 = 𝟓 𝒌𝒎

A person walks south 3 km then west 4 km in 2 hours. Determine the person’s

3. Speed: a. 1.5 km/hr b. 2 km/hr c. 2.5 km/hr d. 3.5 km/hr

Speed =𝒅𝒊𝒔𝒕𝒂𝒏𝒄𝒆

𝒕𝒊𝒎𝒆=

𝟕

𝟐= 𝟑. 𝟓 𝒌𝒎/𝒉𝒓

4. Velocity: a. 1.5 km/hr b. 2 km/hr c. 2.5 km/hr d. 3.5 km/hr

Velocity = 𝒅𝒊𝒔𝒑𝒍𝒂𝒄𝒆𝒎𝒆𝒏𝒕

𝒕𝒊𝒎𝒆=

𝟓

𝟐= 𝟐. 𝟓 𝒌𝒎/𝒉𝒓

5. Identify which of the following is a scalar. (choose all possibility)

a. distance b. displacement c. speed d. velocity

6. Identify which of the following is a vector. (choose all possibility)

a. distance b. displacement c. speed d. velocity

7. What is the equation for constant velocity?

a. lj𝑣 =𝑡2−𝑡1

𝑑2−𝑑1b. lj𝒗 =

𝒅𝟐−𝒅𝟏

𝒕𝟐−𝒕𝟏c. lj𝑣 =

𝑡2−𝑡1

𝑎2−𝑎1d. lj𝑣 =

𝑎2−𝑎1

𝑡2−𝑡1

8. If a car accelerates from 25 m/s to 60 m/s in 5 seconds, determine

the average acceleration of the car.

a. 17 m/s b. 12 m/s2 c. 7 m/s d. 7 m/s2

Average acceleration: a = 𝒗𝟐−𝒗𝟏

𝒕𝟐−𝒕𝟏=

𝟔𝟎−𝟐𝟓

𝟓=

𝟑𝟓

𝟓= 𝟕𝒎/𝒔𝟐

9. A cheetah can travel up to 37 m/s. If a cheetah ran at its top speed,

how far would it travel in 8 seconds?

a. 4.6 m b. 296 m c. 148 m d. 9.6 m

distance = speed x time = (37)(8) = 296 m

10. How long does it takes for a person to travel 300 km at a rate of 30

km/hr?

a. 5 hr b. 7 hr c. 10 hr d. 12 hr

𝒕𝒊𝒎𝒆 =𝒅𝒊𝒔𝒕𝒂𝒏𝒄𝒆

𝒔𝒑𝒆𝒆𝒅=

𝟑𝟎𝟎

𝟑𝟎= 𝟏𝟎 𝒉𝒐𝒖𝒓𝒔

11. How fast must someone travel if they want to complete 200 meters

dash in 25 seconds?

a. 8 m/s b. 50 m/s c. 18 m/s d. 4 m/s

𝒔𝒑𝒆𝒆𝒅 =𝒅𝒊𝒔𝒕𝒂𝒏𝒄𝒆

𝒕𝒊𝒎𝒆=

𝟐𝟎𝟎

𝟐𝟓= 𝟖

𝒎

𝒔

12. Which of the following best describe the graph?

a. constant position b. constant velocity

c. increasing velocity d. decreasing velocity

13. Which of the following best describe the graph?

a. constant position b. constant velocity

c. increasing velocity d. decreasing velocity

14. Which runner was the fastest overall? Runner: A B C

15. Which runner was the slowest overall? Runner: A B C

16. Which runner started out the fastest? Runner: A B C

17. Which runner was the slowest during the last interval Runner: A B C

18. Which runner had constant velocity (no acceleration throughout the whole course)? Runner: A B C

An object moving at a constant velocity of 2 m/s and the starting position

is -4 meters (4 meters behind the reference point).

19. Which of the following is the correct table for the given information?

2 m/s

20. Which of the following velocity vs. time graph is correct for the

given information?

Constant velocity of 2 m/s

21. Which of the following is the best description of the acceleration vs.

time graph for the given information?

a. a horizontal line at 2 m/s2

b. a horizontal line at 0 m/s2 (constant velocity → 0 acceleration)

c. a diagonal line with the slope of 2 m/s2

d. a diagonal line with the slope of -2 m/s2

22. True or False: A scalar is a quantity that has a magnitude and

direction and a vector has only magnitude.

23. Which one of the following is NOT an Aristotle Element?

a. Earth b. Wind c. Fire d. Water e. Air

24. True or False: Violent motion is the motion that put things back in

the proper order and natural motion is what put things out of order.

Violent is taking things out of order and Natural is putting things back.

25. When is distance equal displacement?

a. motion that is two-dimensional

b. linear motion forward and backwards

c. linear motion with no change in direction

d. circular motion

e. distance can never equal displacement

26. What is the base unit for length in the metric system?

a. Liter b. Gram c. Meter

27. The metric system is based on the power of

a. 10 b. 8 c. 2 d. 12

28. Convert 25 cm to meters

a. 0.25 m b. 2.5 m c. 25 m d. 0.0025 m

Two decimal places to the left

29. Convert 18 kg to grams

a. 180 g b. 1800 g c. 18000 g d. 0.018 g

Three decimal points to the right.

30. Convert 8 daL to mL

a. 80 mL b. 800 mL c. 80000 mL d. 0.8 mL

Five decimal places to the right.

31. Write the number 1300 in scientific notation (noting the

number of sig fig)

a. 1.300 x 103 b. 1.300 x 10-3 c. 1.3 x 103 d. 1.3 x 10-3

32. Write 8.24 x 10-2 in standard form.

a. 824 b. 8.24 c. 0.0824 d. 0.824

33. Determine the number of significant figure(s) in (2020).

a. 2 b. 3 c. 4

34. Determine the number of significant figure(s) in (0.00320).

a. 2 b. 3 c. 4 d. 5 e. 6

35. Evaluate and report the answer in significant figure form.

2.34 + 1.258 + 1.2

a. 4.798 b. 4.79 c. 4.80 d. 4.8

36. Evaluate and report the answer in significant figure form.

4.3274 x 1.68

a. 7.27 b. 7.270 c. 7.2700 d. 7.270032