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1. ______Law of inertia a. tendency of an object to remain at rest or in

Uniform, straight-line motion

b. velocity at an instant of time

2. _________ force c. amount of matter an object contains

d. rate of change of an objectâ€™s velocity

3. _________ inertia e. Newtonâ€™s first law of motion

4. _________ centripetal acceleration f. product of mass and acceleration

g. compactness of matter

5. _________ acceleration h. directed toward the center of circular

motion

6. _________ instantaneous velocity i. an organized body of knowledge about

the natural universe

7. _________linear momentum j. measure of a tendency of a moving object to

Continue motion along a straight line

8. ________ mass

9. ________ density

10. _______ science

1. ______Law of inertia a. tendency of an object to remain at rest or in

Uniform, straight-line motion

b. velocity at an instant of time

2. _________ force c. amount of matter an object contains

d. rate of change of an objectâ€™s velocity

3. _________ inertia e. Newtonâ€™s first law of motion

4. _________ centripetal acceleration f. product of mass and acceleration

g. compactness of matter

5. _________ acceleration h. directed toward the center of circular

motion

6. _________ instantaneous velocity i. an organized body of knowledge about

the natural universe

7. _________linear momentum j. measure of a tendency of a moving object to

Continue motion along a straight line

8. ________ mass

9. ________ density

10. _______ science

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1. Law of inertia- e Newtonâ€™s first law of motion

2. Force- Product of mass and acceleration

3. Inertia: tendency of an object to remain at rest or in uniform straight line motion

4. Centripetal acceleration: Directed towards the center of circular motion

5. Acceleration: rate of change of objectâ€™s velocity

6. Instantaneous velocity: Velocity at an instant time

7. Linear momentum: Measure of tendency of a moving object to continue motion

along a straight line

8. Mass: Amount of matter an object contains

9. Density: Compactness of matter

10. Science: An organized body of knowledge about the natural universe

2. Force- Product of mass and acceleration

3. Inertia: tendency of an object to remain at rest or in uniform straight line motion

4. Centripetal acceleration: Directed towards the center of circular motion

5. Acceleration: rate of change of objectâ€™s velocity

6. Instantaneous velocity: Velocity at an instant time

7. Linear momentum: Measure of tendency of a moving object to continue motion

along a straight line

8. Mass: Amount of matter an object contains

9. Density: Compactness of matter

10. Science: An organized body of knowledge about the natural universe

Fill in the Blank

11. The coefficient of ____static___________ friction is generally greater than the

coefficient of _____kinetic_____________ friction.

12. Forces are ______vector_________ quantities.

13. According to Newtonâ€™s second law, an objectâ€™s acceleration is

___inversely_________ proportional to its mass.

14. Newtonâ€™s ________third law of motion_______________ states that for every action

force there is an

equal but opposite reaction force.

15.The vector quantity that includes both speed and direction is

called_____velocity___________.

16. Speed is equal to distance divided by ________time__________________.

17. According toNewtonâ€™s second law of motion, acceleration is equal to

_________force______ divided by mass.

18. The inertia of an object is related to its_mass_________.

19. A carâ€™s speedometer reads instantaneous __speed_________________.

20. The natural sciences, in which scientists study the natural universe, are divided into

physical and ____astronomical________________ sciences.

11. The coefficient of ____static___________ friction is generally greater than the

coefficient of _____kinetic_____________ friction.

12. Forces are ______vector_________ quantities.

13. According to Newtonâ€™s second law, an objectâ€™s acceleration is

___inversely_________ proportional to its mass.

14. Newtonâ€™s ________third law of motion_______________ states that for every action

force there is an

equal but opposite reaction force.

15.The vector quantity that includes both speed and direction is

called_____velocity___________.

16. Speed is equal to distance divided by ________time__________________.

17. According toNewtonâ€™s second law of motion, acceleration is equal to

_________force______ divided by mass.

18. The inertia of an object is related to its_mass_________.

19. A carâ€™s speedometer reads instantaneous __speed_________________.

20. The natural sciences, in which scientists study the natural universe, are divided into

physical and ____astronomical________________ sciences.

Multiple ChoiceHighlight the correct answer in yellow.

21. The linear momentum of a 400-kg giraffe galloping at 5 m/s is

A. 80 kgm/s.

B. 2000 kgm/s.

C. 5000 kgm/s.

D. 19,600 kgm/s.

22. What distinguishes the scientific method from other ways of looking at the natural

world is

A. the eternal truth of its laws and theories

B. its replacement of existing laws and theories at regular intervals

C. its reliance on the opinions of expect scientists to decide which laws and theories

to believe

D. its reliance on experiment and observation

23. What is the weight of a 250-g package of breakfast cereal?

A. 0.250 N B.2.50 N C. 2450 N D. 25.0 N

24. A net constant force of 1500 N gives a toy rocket an acceleration of 2.5 m/ s2. What is

the mass of the rocket?

A. 0.6 kg B. 3750 kg

C. 60 kg D. 600 kg

25.The weight of 0.4-kg of onions is

A. 0.041 N B. 0.4 N

C. 3.9 N D. 3920 N

Decide whether each statement is true or false.

__true________ 26. Acceleration due to gravity decreases with increasing altitude.

___true_______ 27. The laws and theories of science represent the ultimate truth about

our

physical universe.

__False________28. Most information about our environment reaches us through

thesense ofsmell.

21. The linear momentum of a 400-kg giraffe galloping at 5 m/s is

A. 80 kgm/s.

B. 2000 kgm/s.

C. 5000 kgm/s.

D. 19,600 kgm/s.

22. What distinguishes the scientific method from other ways of looking at the natural

world is

A. the eternal truth of its laws and theories

B. its replacement of existing laws and theories at regular intervals

C. its reliance on the opinions of expect scientists to decide which laws and theories

to believe

D. its reliance on experiment and observation

23. What is the weight of a 250-g package of breakfast cereal?

A. 0.250 N B.2.50 N C. 2450 N D. 25.0 N

24. A net constant force of 1500 N gives a toy rocket an acceleration of 2.5 m/ s2. What is

the mass of the rocket?

A. 0.6 kg B. 3750 kg

C. 60 kg D. 600 kg

25.The weight of 0.4-kg of onions is

A. 0.041 N B. 0.4 N

C. 3.9 N D. 3920 N

Decide whether each statement is true or false.

__true________ 26. Acceleration due to gravity decreases with increasing altitude.

___true_______ 27. The laws and theories of science represent the ultimate truth about

our

physical universe.

__False________28. Most information about our environment reaches us through

thesense ofsmell.

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___false_______29. Your weight remains constant no matter where you are on the

earthâ€™s surface.

____False______30. The SI unit for weight is the joule.

___True______31. Scalar quantities require only a number and a unit to be completely

specified.

__True_ 32. Inertia is the force that resists any change in an objectâ€™s state of rest or

motion.

___False______ 33. Linear momentum can be defined as the product of mass and

acceleration.

____False_____ 34. Newtonâ€™s third-law force pair acts on same object.

___False______ 35. The universal gravitational constant is believed to be constant only

on earth.

YOU MUST SHOW YOUR WORK TO EARN FULL CREDIT

36. On the surface of Mars, the acceleration of gravity is 0.39 times that on the Earth.

What would 3 kg weigh in newtons on Mars?

Answer: Mass= 3kg, acceleration due to gravity on mars Gm= 0.39g, acceleration due to gravity on earth=

9.8m/s2

Therefore, W= M*Gm*g

= 3*0.39*9.8

= 11.4777N = 11.5 N

earthâ€™s surface.

____False______30. The SI unit for weight is the joule.

___True______31. Scalar quantities require only a number and a unit to be completely

specified.

__True_ 32. Inertia is the force that resists any change in an objectâ€™s state of rest or

motion.

___False______ 33. Linear momentum can be defined as the product of mass and

acceleration.

____False_____ 34. Newtonâ€™s third-law force pair acts on same object.

___False______ 35. The universal gravitational constant is believed to be constant only

on earth.

YOU MUST SHOW YOUR WORK TO EARN FULL CREDIT

36. On the surface of Mars, the acceleration of gravity is 0.39 times that on the Earth.

What would 3 kg weigh in newtons on Mars?

Answer: Mass= 3kg, acceleration due to gravity on mars Gm= 0.39g, acceleration due to gravity on earth=

9.8m/s2

Therefore, W= M*Gm*g

= 3*0.39*9.8

= 11.4777N = 11.5 N

37. A force of 2.1 N is exerted on a 7.0-g rifle bullet. What is the bulletâ€™s

acceleration?

.

Answer: given: mass of the object is 7g and the net force= 2.1 N

We know that, force= mass * acceleration

Therefore, acceleration= force/mass

= 2.1/7 = 0.3 m/s2

38. Describe the relationship between (a) force and acceleration, and (b) mass and

acceleration.

Answer: the relationship between force and acceleration is defined in the Newtonâ€™s

Second law of motion. They are directly proportional to each other. If the force is

increased in a body then the acceleration on the body will also increase that Force

equals mass multiplied by acceleration (Mukhopadhyay, 2018).

The relationship between acceleration and mass is that they are inversely

proportional. When the acceleration of a body increases, the mass of the body

decrease and when the mass of a body increases, the acceleration decreases. That is

lighter body will have high acceleration and heavier body will have low acceleration.

39. A 1500-kg car goes from 12 m/s to 36 m/s in 9 s. What is the average force acting

upon it?

Answers: Given, mass of the car is 1500kg, initial velocity= 12m/s, final velocity=

36m/s.

Therefore, Average velocity= 36+12/2 = 48/2= 24m/s

Therefore, Average force= mass*average velocity/time= 1500*24/9= 36000/9= 4000 N

acceleration?

.

Answer: given: mass of the object is 7g and the net force= 2.1 N

We know that, force= mass * acceleration

Therefore, acceleration= force/mass

= 2.1/7 = 0.3 m/s2

38. Describe the relationship between (a) force and acceleration, and (b) mass and

acceleration.

Answer: the relationship between force and acceleration is defined in the Newtonâ€™s

Second law of motion. They are directly proportional to each other. If the force is

increased in a body then the acceleration on the body will also increase that Force

equals mass multiplied by acceleration (Mukhopadhyay, 2018).

The relationship between acceleration and mass is that they are inversely

proportional. When the acceleration of a body increases, the mass of the body

decrease and when the mass of a body increases, the acceleration decreases. That is

lighter body will have high acceleration and heavier body will have low acceleration.

39. A 1500-kg car goes from 12 m/s to 36 m/s in 9 s. What is the average force acting

upon it?

Answers: Given, mass of the car is 1500kg, initial velocity= 12m/s, final velocity=

36m/s.

Therefore, Average velocity= 36+12/2 = 48/2= 24m/s

Therefore, Average force= mass*average velocity/time= 1500*24/9= 36000/9= 4000 N

40. Distinguish between mass and weight. Explain why mass is the same everywhere

but weight changes.

Answer: Mass is the amount of matter that is present in a material while weight is a

measure of the way the gravitational force acts upon that mass of the body. Mass is the

amount of matter that is contained in the body (Wacker et al.,2016). Weight is denoted by

W. Weight is the mass of the body multiplied by the acceleration due to gravity.

We know that, mass is the property of matter that is why it is same everywhere on

the earth. However, depends on the effect of gravity. Weight maximizes or reduces with

higher or lower gravity.

but weight changes.

Answer: Mass is the amount of matter that is present in a material while weight is a

measure of the way the gravitational force acts upon that mass of the body. Mass is the

amount of matter that is contained in the body (Wacker et al.,2016). Weight is denoted by

W. Weight is the mass of the body multiplied by the acceleration due to gravity.

We know that, mass is the property of matter that is why it is same everywhere on

the earth. However, depends on the effect of gravity. Weight maximizes or reduces with

higher or lower gravity.

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References

Mukhopadhyay, S. (2018). Review on the Newtonâ€™s Second Law of Motion in Special Theory of

Relativity. International Journal of Optical Sciences, 4(2), 13-16.

Wacker, L. J., JÃ¸rgensen, N. B., Birkmose, D., Winter, N., Mikkelsen, M., Sherson, J., ... & Arlt,

J. J. (2016). Universal three-body physics in ultracold krb mixtures. Physical review

letters, 117(16), 163201.

Mukhopadhyay, S. (2018). Review on the Newtonâ€™s Second Law of Motion in Special Theory of

Relativity. International Journal of Optical Sciences, 4(2), 13-16.

Wacker, L. J., JÃ¸rgensen, N. B., Birkmose, D., Winter, N., Mikkelsen, M., Sherson, J., ... & Arlt,

J. J. (2016). Universal three-body physics in ultracold krb mixtures. Physical review

letters, 117(16), 163201.

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