Forces Test

Question 0

2. What is a force

Answer 0

A push or pull exerted on an object in order to change the motion of the object force has size and direction

Question 1

1. What is inertia

Answer 1

The tendency of an object to resist being moved or if the object is moving to resist a change in speed or direction until an outside force acts on the object

Question 2

3. What SI unit is measured to measure force

Answer 2

Newtons

Question 3

4. Name the two properties of force

Answer 3

Direction and magnitude

Question 4

5. How are forces calculated when they are in the same direction

Answer 4

They are added together

Question 5

6. How are forces calculated when they are in different direction

Answer 5

Subtract the smaller force from the bigger one

12N- 10N= 2N

Question 6

9.What is a balanced force

Answer 6

When the object goes at a constant speed or its stopped

Question 7

10. What is tension and compression

Answer 7

Tension is a force that is exerted when matter is pulled or stretched. Compression is a force that is exerted when matter is pushed or squeezed.

Question 8

11. A force on an object can be balanced even if the object is in motion

Answer 8

True

Question 9

12. What will an unbalanced force cause.

Answer 9

Cause a change of velocity in an object

Question 10

13How will an unbalanced force change a moving object

Answer 10

It can make the object go faster or slower or change direction

Question 11

14. How will an unbalanced force change a static object?

Answer 11

It will change by it will make the object start to move or cause a moving object to slow down and stop moving

Question 12

15. What will an unbalanced force acting in the opposite direction do to something that is moving forward

Answer 12

The object will slow down

Question 13

16. Define friction

Answer 13

A force that opposes motion between two surfaces that are in contact

Question 14

17. What causes friction

Answer 14

Rough surfaces hills and valleys stick to other hills and valleys

Question 15

18.What are 2 factors that affect the magnitude of frictional force

Answer 15

Force pushing surfaces together

Materials that make up the surface

Question 16

19.Why does it take less force to slide a light book across a table than a heavy books

Answer 16

Because the heavy book has more weight and is more rough

Question 17

20. Does the surface area of an object affect the fictional force

Answer 17

No

Question 18

21. Does the friction increase or decrease when the surface of an object slides across become rough

Answer 18

Increase

Question 19

22.What is kinetic friction

Answer 19

Friction between moving surfaces

Question 20

23.What is static friction

Answer 20

Friction between non-moving surfaces

Question 21

24. Is there any frictional force if there is no force applied to an object

Answer 21

No

Question 22

25. How can static friction be overcome

Answer 22

Applying a large amount of force

Question 23

26. What replaces static friction when an object begins moving

Answer 23

Kinetic friction

Question 24

27. The 3 ways friction can be reduced is….

Answer 24

Lubricants, switching from sliding kinetic friction to rolling, and smooth surfaces that rub against each other

Question 25

28. The 2 ways friction can be increased are

Answer 25

Make surfaces rougher and increase the force of pushing objects together