CARDINAL NEWMAN CATHOLIC SECONDARY SCHOOL

Name: ______Date: ______SNC 2D 9

REVIEW – PHYSICS (MOTION)

1. Fill in the table below for each variable

VARIABLE / DESCRIPTION / SCALAR/VECTOR / FORMULA / COMMON UNITS
vav
v1
v2
Distance
t
aav
Position
/ Displacement
VARIABLE / DESCRIPTION / SCALAR/VECTOR / FORMULA / COMMON UNITS
Displacement (when acceleration is constant)
Displacement (when final speed is not given)

2. For each measurement, identify the number of significant digits

(a) 407.0 cm _____

(b) 75 km/h _____

(c) 0.07 cm ____

(d) 0.7658 m ______

(e) 3.0 x 108 km ______

3. Express the following values in scientific notation

(a) 43 755 = ______

(b) 0.00475 = ______

4. List the similarities and differences between scalar and vector quantities. Also list examples.

SCALAR QUANTITY / VECTOR QUANTITY
SIMILARITIES
DIFFERENCES
EXAMPLES / EXAMPLES

5. Draw the following vectors using the scale 1 cm = 10 m

(a) 77 m [W] (b) 23 m [N] (c) 5 m [S]

6. Using a protractor and ruler, draw the following vectors with the given angle.

(a) 38° W of N (b) 57° E of S (c) 27° N of W

7. Indicate the direction of each vector (ie. 25° E of N, etc.)

(a) (b) (c)

SAMPLE PROBLEMS

1. Christian walks to school at a total distance of 5.7 km and it takes him 0.72 h to complete the journey. What was his average speed?

2. Richard takes a trip with a distance of 45 km, moving at an average speed of 20 km/h. How long was his trip? Express your answer in minutes.

3. Using the distance-time graph below, determine the object’s speed.

4. Mikey’s motorcycle speeds up from rest to 9.0 m/s in 2.0 s. What was his average acceleration?

5. Shane accelerates at an average 5.2 m/s2 for 1.75 s. What was his change in speed?

6. When Carson was riding on his scooter, he reached a final speed of 25.2 m/s after accelerating at 2.1 m/s2 for 21 s. What was his initial speed?

7. Using the speed-time graph below:

(a) Calculate the acceleration for each line segment

(c) Calculate the total distance traveled

8. David decides to go for a walk. He walks 25 m [E], changes his mind and decides to walk 37 m [W]. Using the “combined method”, determine his resultant displacement. Assume east to be positive.

9. Josh jumps on his bicycle and takes it for a ride. He travels 500 m [N], stops then travels another 100 m [N]. Afterwards, he travels 400 m [S]. What is his resultant displacement. Assume north to be positive. Solve the problem using the “combined method”.

10. Matt runs of his house and heads east. He runs 200 m, stops, then runs 400 m [S]. After catching his breath, he runs another 150 m [W]. Using a scale diagram (1 cm = 50 m), determine his resultant displacement.

11. A Porsche travels at a constant speed and has a displacement of 250 km [E] in a time of 1.25 h. What is the car’s velocity?

12. Irene jogs 520 m [E] then turns around and jogs 410 m [W]. If the total time for the jog was 18 minutes, what was her average velocity? Express your answer in m/s.

13. Using the position-time graph, determine the velocity of each line segment.

14. Using the velocity-time graph below:

(a) Calculate the acceleration of each line segment

(b) Calculate the displacement of the object

15. A chicken runs across the farm and accelerates constantly from 7 m/s [E] to 17 m/s [E] in a time of 10.0 s. Find the displacement of the chicken during that time interval. Assume [E] to be positive.

16. Joe jumps on a pogo stick and leaves the ground with an initial velocity of 3.0 m/s [up] and an acceleration of 9.8 m/s2 [down]. Joe reaches his max. height in 0.85 s. What is Joe’s height at the top of the jump? Assign up as positive.