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Unit 1 Introduction to Physics

Total questions: 47

Worksheet time: 45mins

Name
Class
Date
1.

Physics is the study of:

a)

the earth

b)

living things

c)

chemical bonds

d)

motion and energy

2.

TRUE or FALSE:

Vectors can be added together; scalar quantities cannot.

a)

TRUE

b)

FALSE

3.

It is a quantity that has both magnitude and direction.

a)

displacement

b)

vector

c)

momentum

d)

acceleration

4.

It is the object's overall change in position.

a)

Acceleration

b)

Vector

c)

Momentum

d)

Displacement

5.

The analytical (mathematical) method of vector addition uses the Pythagorean theorem and trigonometric identities to calculate the size and direction of a resultant vector.

a)

TRUE

b)

FALSE

6.

What is the scientific notation of 0.02454365?

a)

2.454365 × 10-2

b)

2.487592831 × 10-1

c)

2.398427221 × 10-1

d)

2.3786435 × 10-2

7.
A car travels 90 meters due north in 15 seconds. Then the car turns around and travels 40 meters due south.  What is the magnitude and direction  of the car's resultant displacement?  
a)
40 metres, South
b)
50 metres, South
c)
50 metres, North
d)
40 metres, North 
8.
Which statement describes a vector?
a)
It has magnitude but no direction
b)
It has direction but no magnitude
c)
It has both direction and magnitude
d)
It has constant magnitude but no
 direction
9.
In practice A of the figure, what is the direction of the resultant displacement?
a)

63 degrees, South of North

b)

63 degrees West of North

c)

27 degrees North of East

d)

27 degrees, West of North

10.
In practice B of the figure, which displacement is the horizontal component?
a)
30 km, East
b)
30 km, West
c)
40 km, North
d)
40 km, South
11.
Is this a scalar quantity or a vector quantity?
Wind blowing at 20 knots
a)
Scalar
b)
Vector
12.
Is this a scalar quantity or a vector quantity?
A deer running 15 meters per second due west
a)
Scalar
b)
Vector
13.
If a boomerang is thrown 20 m in a straight line and returns exactly to the spot it was thrown what is its displacement?
a)
20m
b)
40m
c)
0m
d)
-20m
14.
If a car moves 12 km North, 19 km East, and 12 km South, what is its displacement?
a)
12 km
b)
19 km, East
c)
31 km
d)
43 km, East
15.
Which of these is not a vector quantity? 
a)
displacement 
b)
time
c)
velocity 
d)
acceleration
16.
The _______ of two or more vectors is the sum of the vectors.
a)
components
b)
scalar
c)
resultant
d)
magnitude
17.
What is the net force?
100 N        230 N
<------        --------->
a)
30 N to the right
b)
230 N to the right
c)
130 N to the right
d)
This is a balanced force
18.

A method used to add vectors together

a)

Tip to Tail Method

b)

Resultant Vector

c)

Pythagorean Theorem

d)

a2+b2=c2a^2+b^2=c^2

19.

What is this Equation: a2+b2=c2a^2+b^2=c^2  

a)

Standard Vector Form

b)

Resultant Vector

c)

Pythagorean Theorem

d)

Equation of a Circle

20.

The amount or value:

a)

Direction

b)

Magnitude

c)

Resultant

d)

Vector

21.

Velocity is an example of a:

a)

Vector

b)

Scalar

22.

Time is an example of a:

a)

Vector

b)

Scalar

23.
solve for c
a)
7
b)
9
c)
4
d)
13
24.

Find the missing side of this right angled triangle...

a)

4.1cm

b)

2.4cm

c)

2.5cm

d)

4.2cm

25.
To get from point A to point B you must avoid walking through a pond.  To avoid the pond, you must walk 34 meters south and 41 meters east.  To the nearest meter, how many meters would be saved if it were possible to walk through the pond? 
a)
35
b)
22
c)
58
d)
75
26.

A 2.5m long ladder leans against the wall of a building. The base of the ladder is 1.5m away from the wall. What is the height of the wall?

a)

2 cm

b)

8 m

c)

2 m

d)

5 m

27.

How many significant figures are in the measurement 0.0054 cm?

a)

5

b)

4

c)

3

d)

2

28.

How many significant figures are in the measurement 57, 600 mL?

a)

5

b)

3

c)

2

d)

4

29.

A virus is viewed under a microscope. Its diameter is 0.0000002 meter.  How would this length be expressed in scientific notation?

a)

2 x 10⁻⁷ m

b)

2 x 10⁻⁶ m

c)

2 x 10⁶ m

d)

2 x 10⁷ m

30.

How would the number 710,000,000 be expressed in scientific notation?

a)

710 x 10⁶

b)

7.1 x 10⁸

c)

7.1 x 10⁻⁸

d)

71 x 10⁸

31.

A physics student has a mass of 75. kilograms.  Express her mass in grams and in pounds. (1 kg = 2.2 lbs.)

a)

0.075 g; 34 lbs.

b)

750, 000 g; 165 lbs.

c)

75,000 g; 34 lbs.

d)

75,000 g; 165 lbs.

32.

A hiker starts at point P and walks 2.0 km due east and then 1.4 km due north.  The vectors in the diagram below represent these two displacements.  Calculate the magnitude and direction of the resultant vector.

a)

2.4 km; 90° due N

b)

3.4 km; 35° NE

c)

3.4 km; 0° due E

d)

2.4 km; 35° NE

33.

A hiker travels 1.0 km south, turns and travels 3.0 km west, and then turns and travels 3.0 km north.  What is the total distance traveled by the hiker?

a)

3.2 km

b)

3.6 km

c)

5.0 km

d)

7.0 km

34.

An airplane traveling north at 220. m/s encounters a 50.0 m/s crosswind from west to east, represented in the diagram below.  What is the resultant velocity of the plane?

a)

170. m/s

b)

214 m/s

c)

226 m/s

d)

270. m/s

35.

A river flows due east at 1.5 m/s.  A motorboat leaves the north shore of the river and heads due south at 2.0 m/s, as shown in the diagram below.  Which vector best represents the resultant velocity of the boat relative to the river bank?

a)

A

b)

B

c)

C

d)

D

36.

Add the following vectors together using the tip-to-tail method, and determine the magnitude of the resultant.

a)

13 m

b)

5 m

c)

7 m

d)

1 m

37.

In a drill during basketball practice, a player runs the length of the 30-meter court and back.  The player does this three times in 60 seconds. What is the player's total distance after running the drill?

a)

0.0 m

b)

30 m

c)

60 m

d)

180 m

38.

In a drill during basketball practice, a player runs the length of the 30-meter court and back.  The player does this three times in 60 seconds. What is the player's total displacement after running the drill? 

a)

0.0 m

b)

30 m

c)

60 m

d)

180 m

39.

A meter is a unit of:

a)

length

b)

mass

c)

time

d)

energy

40.

An hour is a unit of:

a)

length

b)

mass

c)

time

d)

temperature

41.

How many grams are in 1.5 kg?

a)

1.5 g

b)

15 g

c)

150 g

d)

1500 g

42.

How many liters are in 750 mL?

a)

750 L

b)

75 L

c)

7.5 L

d)

0.75 L

43.

If there are 5,280 feet in a mile and 12 inches in a foot, how many inches are in 2 miles?

a)

63,360 inches

b)

126,720 inches

c)

440 inches

d)

220 inches

44.

How many sig figs are in the following number: 10470?

a)

5

b)

4

c)

3

d)

1

45.

How many sig figs are in the following number: 0.003?

a)

1

b)

2

c)

3

d)

4

46.

Determine the resultant of the following two vectors:

a)

3 m/s, right

b)

3 m/s left

c)

7 m/s left

d)

7 m/s, right

47.

Determine the resultant of the following two vectors:

a)

3 m/s, left

b)

3 m/s, right

c)

7 m/s, left

d)

7 m/s, right

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