Question 1

Question

What type of nuclear radiation is given off in the nuclear reaction below?

a
Gamma radiation

b
Beta radiation

c
Alpha radiation

Question 2
Which of Newton's Laws does the following scenario describe?

My car hits a mosquito, and the mosquito hits back, equally.

a
1st Law
b
2nd Law
c
3rd Law
Question 3
When balanced force acts on an object, the net force that results is

a
equal in size to one of the forces.
b
equal to zero.
c
greater in size than both forces combined.
d
greater in size than one of the forces.
Question 4
Amelia swims at an average speed of 8 meters per second, how long will it take her to complete a race of 600 meters length?

a
4800 seconds
b
75 seconds
c
1.3 seconds
d
48 seconds
Question 5
Two students are pushing a cart, as shown below.



What is the net force acting on the cart?

a
50 N to the left
b
350 N to the left
c
150 N to the left
d
50 N to the right
e
350 N to the right
f
200 N to the right
g
150 N to the right
h
200 N to the left
Question 6
What is the gravitational force of attraction between a planet and a 17-kilogram mass that is freely falling toward the surface of the planet at 8.8 m/s2?

a
150 N
b
0.52 N
c
1.9 N
d
8.8 N
Question 7
A radioisotope has a half-life of 7.5 hours. How many half lives have occured after 67.5 hours?

a
7 half-lives
b
8 half-lives
c
9 half-lives
d
10 half-lives
Question 8
Before taking the Unit 7: Force & Motion Test, you were asked to review resources from the Unit 7: Force & Motion Resource Guide.

Below, list the two resources you reviewed and one thing you learned from each. At least two sentences per resource for your explanation.

**This is a required question - not bonus points. If you leave it unanswered, your test score will be impacted.**

Your answer:
Question 9
What is the difference between speed and velocity?

a
Velocity has time.
b
Velocity has distance.

c
Velocity has direction.
d
Velocity has weight.

Question 10
An object starts moving from point A and continues along a straight path from A to point D.

If the object starts moving from point A and continues along a straight path from point A to point D, which of the following is true?

a
In the interval from point A to point D, the object travels 11 m.
b
In the interval from point A to point B, the object travels 30 m.
c
In the interval from point B to point C, the object travels 30 m.
d
In the interval from point C to point D, the object travels 0 m.
Question 11
A runner starts at Point B and runs to point A then to point D and finally stops at point C. The runner's total distance was m. The runner's total displacement was m East.

Blank 1:
Blank 2:
Question 12
The graph below represents the relationship between speed and time for a car moving in a straight line.

What is the acceleration of the car?

a
10 m/s2

b
1.0 m/s2

c
0 m/s2

d
0.10 m/s2

Question 13
An object originally at rest is uniformly accelerated to a speed of 8.0 meters per second in 2.0 seconds. What is the acceleration of the object?

\large acceleration=\frac{v_{final}-v_{initial}}{time}

a
<p>16 m/s²</p>
b
<p>10. m/s²</p>
c
<p>0.25 m/s²</p>
d
<p>4.0 m/s²</p>
Question 14
What is the difference between a vector and a scalar?

a
A vector measurement contains a direction and magnitude, a scalar measurement only contains a magnitude
b
A vector is only measured in SI units, where scalars are only measured in US Customary units
c
A vector is only used in measuring forces, a scalar is only used in measuring mass
d
A vector measurement is required for distance, a scalar measurement is required for displacement
Question 15
Match each description or picture with its correct term.

Column A
1.
How far an object has traveled.:
How far an object has traveled.
2.
The straight line difference between the starting point and the ending point.:
The straight line difference between the starting point and the ending point.
3.
5 meters:
5 meters
4.
The black arrow in the picture below.



:
The black arrow in the picture below.



5.
The blue dashed lines in the picture below:



:
The blue dashed lines in the picture below:



6.
5 m North:
5 m North
Column B
a.Distance
b.Displacement
Question 16
If Tom kicks a 0.350 kg soccer ball with 0.90 N of force, what is the acceleration of the ball?

F= ma

a
0.32 m/s2

b
3.15 m/s2

c
315 m/s2

d
2.6 m/s2

e
0.003 m/s2

f
388.9 m/s2

Question 17
The graph below shows the distance and time traveled by a remote-controlled car.

Which of the following is correct about the remote-controlled car?

a
It is traveling at a constant speed of 6 meters per second.
b
It is traveling at an increasing speed of 12 meters per second.
c
It is traveling at an increasing speed of 6 meters per second.

d
It is traveling at a constant speed of 12 meters per second.
Question 18
The table shows the times it took different animals to cover various distances.

MOTION OF ANIMALS
Animals Distance (km) Time (h)
Gray fox 73 1.05
Gazelle 68 0.85
Rabbit 70 1.25
Cheetah 85 0.75
Giraffe 60 1.15
Antelope 93 0.95


Which animal's speed is the greatest?

a
gazelle
b
rabbit
c
gray fox
d
cheetah
Question 19
The graph shows the motion of a squirrel that leaves its nest to find food.

Which segment of the graph represents the squirrel heading toward its nest?

a
T
b
R
c
S
d
Q
Question 20
Balance the following the chemical equation:

_ Mg + _ F2 → _ MgF2

a
1:1:1
b
1:2:1
c
2:1:1
d
1:1:2
Question 21
What is the mass number of the atom below?

a
7
b
10
c
3
d
4
Question 22
Which terms correctly represent a vector quantity and its respective unit?

a
force - Newton
b
mass - kilogram
c
weight - kilogram
d
speed - meters per second
Question 23
If you keep a gas's temperature constant, how would you increase the volume of the gas?

a
You would change the temperature
b
You would decrease the pressure
c
You would decrease the temperature
d
You would increase the pressure
Question 24
If a dolphin swims at 1.85 m/s, how far will the dolphin have traveled after 6.0 s?

a
3.2 m
b
31 m
c
11 m
d
9.0 m
Question 25
An object that is accelerating may be (choose all that apply)

a
traveling at a constant speed
b
changing direction.
c
slowing down.
d
gaining speed.
e
not moving.
Question 26
An unbalanced force of 10. newtons is applied to an object of mass 4.0 kilograms. The acceleration of the object, in m/s2 to the nearest tenth is . (Don't include units on your answer)

Blank 1:
Question 27
An object moves a distance of 10 meters in 5 seconds. What is the average speed of the object?

a
2.0 m/s
b
50 m/s
c
40 m/s
d
0.5 m/s
Time left for this assessment:
78:31
English

Answer 1

Here are the answers to your questions:

Question 1:

• Answer: c) Alpha radiation (Assuming this is the type indicated in the nuclear reaction as alpha radiation typically involves the emission of \( \alpha \) particles).

Question 2:

• Answer: c) 3rd Law (Newton's Third Law states that for every action, there is an equal and opposite reaction).

Question 3:

• Answer: b) equal to zero. (Balanced forces result in no net force on an object).

Question 4:

• Answer: b) 75 seconds (Time = Distance/Speed = 600 m / 8 m/s = 75 s).

Question 5:

• Given that the questions do not provide values for the forces applied by the students, I cannot determine the answer without that information. Please provide the forces for completion.

Question 6:

• Answer: a) 150 N (Using \( F = m \cdot a = 17 , \text{kg} \cdot 8.8 , \text{m/s}^2 = 149.6 , \text{N} \approx 150 , \text{N} \)).

Question 7:

• Answer: b) 9 half-lives (67.5 hours / 7.5 hours = 9).

Question 8:

• Your answer should describe two resources you reviewed and what you learned from each, as described in the question prompt.

Question 9:

• Answer: c) Velocity has direction. (Speed is a scalar quantity, while velocity is a vector quantity that includes direction).

Question 10:

• Without a visual of the points (A, B, C, D), I cannot give a definitive answer. However, if point D is the final position and it is ahead on a line, option a could likely be true.

Question 11:

• Without specific distances, I cannot provide values for the total distance or displacement. Please specify the distances.

Question 12:

• Without the graph, I cannot provide an answer. Please provide details.

Question 13:

• Answer: d) 4.0 m/s² (Acceleration = \( (8.0, \text{m/s} - 0, \text{m/s}) / 2.0 , \text{s} = 4.0 , \text{m/s}^2 \)).

Question 14:

• Answer: a) A vector measurement contains a direction and magnitude, a scalar measurement only contains a magnitude.

Question 15:

• 1. a. Distance; 2. b. Displacement; 3. a. Distance; 4. b. Vector; 5. b. Displacement; 6. a. Vector (Assuming descriptions in the column were paired with the correct terms).

Question 16:

• Answer: a) 2.6 m/s² (Using \( F = ma \rightarrow a = F/m = 0.90, \text{N} / 0.350, \text{kg} \approx 2.57, \text{m/s}^2\)).

Question 17:

• Without the graph, I cannot provide an answer. Please provide further details.

Question 18:

• Answer: d) cheetah (Cheetah's speed = 85 km / 0.75 h = 113.33 km/h, which is the highest).

Question 19:

• Without the graph, I cannot provide an answer. Please provide further details.

Question 20:

• Answer: b) 1:2:1 (This indicates a balanced chemical equation).

Question 21:

• Without an image of the atom, I can't provide an answer. Please provide the mass number or details.

Question 22:

• Answer: a) force - Newton (Force is a vector quantity measured in Newtons).

Question 23:

• Answer: b) You would decrease the pressure (According to Boyle's law).

Question 24:

• Answer: b) 11 m (Distance = speed × time = 1.85 m/s × 6.0 s = 11.1 m).

Question 25:

• Answers: b) changing direction, c) slowing down, d) gaining speed (All are true when an object is accelerating).

Question 26:

• Blank 1: 2.5 (Using \( F = ma \rightarrow a = F/m = 10 , \text{N} / 4.0, \text{kg} = 2.5, \text{m/s}^2 \)).

Question 27:

• Answer: a) 2.0 m/s (Average speed = distance/time = 10 m / 5 s = 2.0 m/s).

Let me know if you need any further clarifications or details on specific questions!