Question

4. An object with a mass of 4.0 kg accelerates 2.0 m/s2 when an unknown force is applied to it. What is the amount of the force?

5. An object with a mass of 7.5 kg accelerates 8.3 m/s2 when an unknown force is applied to it. What is the amount of the force?

6. An object accelerates 3.0 m/s2 when a force of 21.0 newtons is applied to it. What is the mass of the object?


7. An object accelerates 12.0 m/s2 when a force of 24.0 newtons is applied to it. What is the mass of the object?

8. An object accelerates 4.0 m/s2 when a force of 20.0 newtons is applied to it. What is the mass of the object?

9. An object accelerates 2.0 m/s2 when a force of 18.0 newtons is applied to it. What is the mass of the object?

10. An object accelerates 20.0 m/s2 when a force of 4.0 newtons is applied to it. What is the mass of the object?


11. An object with a mass of 2.0 kg has a force of 30.0 newtons applied to it. What is the resulting acceleration of the object?

12. An object with a mass of 4.0 kg has a force of 20.0 newtons applied to it. What is the resulting acceleration of the object?

13. An object with a mass of 10.0 kg has a force of 5.0 newtons applied to it. What is the resulting acceleration of the object?

14. An object with a mass of 3.0 kg has a force of 18.0 newtons applied to it. What is the resulting acceleration of the object?

15. An object with a mass of 31.0 g has a force of 6.2 newtons applied to it. What is the resulting acceleration of the object?

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Answer 1

Answer:

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Answer 2

Given,

Masses

Forces

Accelerations.

To find,

Forces, masses, accelerations.

Solution:

• Acceleration of a body is equal to the rate of change of velocity.
• Its unit is m/s^2.
• It is also equal to the product of mass of an object and its acceleration.
• F=mxa.

4. Mass=4 Kg, acceleration=2 m/s^2.

F=4x2

F=8N.

5. Mass=7.5 Kg, acceleration=8.3 m/s^2.

F=7.5x8.3

F=62.25N.

6. Force=21N, acceleration=3 m/s^2.

21=mx3

m=7 Kg.

7. Force=24N, acceleration=12 m/s^2.

24=mx12

m=2 Kg.

8. Force=20N, acceleration=4 m/s^2.

20=mx4

m=5 Kg.

9. Force=18N, acceleration=2 m/s^2.

18=mx2

m=9 Kg.

10. Force=4N, acceleration=20 m/s^2.

4=mx20

m=0.2 Kg.

11. Force=30N, mass=2 Kg.

30=2xa

a=15 m/s^2.

12. Force=20N, mass=4 Kg.

20=4xa

a=5 m/s^2.

13. Force=5N, mass=10 Kg.

5=10xa

a=0.5 m/s^2.

14. Force=18N, mass=3 Kg.

18=3xa

a=6 m/s^2.

15. Force=6.2N, mass=31 g.

Mass(Kg)=31/1000 Kg.

Mass(Kg)=0.031 Kg.

6.2=0.031xa

a=200 m/s^2.

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