Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Physics 😔✨💫 > Effects Of Forces > Flashcards

Effects Of Forces Flashcards

1
Q

Flashcard 1:
Front: What is force?

A

Back: Force is a push or pull.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Flashcard 2:
Front: In which unit is force measured?

A

Back: Newton (N).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Flashcard 3:
Front: What instruments are used to measure force?

A

Back: Spring balance, forcemeter, Newton metre.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Flashcard 4:
Front: What are the two groups or types of forces?

A

Back: Contact forces and non-contact forces.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Flashcard 5:
Front: Give examples of contact forces.

A

Back: Friction, tension, push/pull.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Flashcard 6:
Front: Give examples of non-contact forces.

A

Back: Weight, magnetic force, electrostatic force.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Flashcard 7:
Front: What effects can force produce?

A

Back: Force can change the size, shape, break an object, change the speed/velocity of the body, and change the position/direction of an object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Flashcard 8:
Front: What does Newton’s first law state?

A

Back: “An object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Flashcard 9:
Front: What does Newton’s second law state?

A

Back: ( F = m \times a ) - acceleration is proportional to the force and inversely proportional to mass.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Flashcard 10:
Front: Identify the types of forces acting on an object being pulled to the right.

A

Back: Normal force, air resistance force, pulling force, frictional force, gravitational or weight force.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Flashcard 11:
Front: Describe the ways in which a force may change the motion of a body.

A

Back: Get an object moving, make an object move faster, stop an object, change the direction in which the object is moving, return changes in motion, change the position of an object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Flashcard 12:
Front: Identify different forces in everyday life.

A

Back:
Agent applying the force | Object the force is applied to
— | —
Electrical force | Charges (positive and negative)
Magnetic force | Magnets
Gravitational force | Objects on earth
Weight force | Stationary or falling objects
Tension force | Cable, rope, or chain
Frictional force | Surfaces of objects
Air resistance force | Moving objects

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Flashcard 13:
Front: What is resultant force/net force?

A

Back: The combined effects of all the forces acting on an object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Flashcard 14:
Front: What can you do if all forces are acting in the same direction?

A

Back: Add all forces to find the resultant force.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Flashcard 15:
Front: What can you do if forces act in opposite directions?

A

Back: Subtract smaller force from bigger force to find the resultant force.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Flashcard 16:
Front: What is the resultant force of a cyclist moving at a constant speed below?

A

Back: ( F = 4 N - 10 N ) = -6 N

17
Q

Flashcard 17:
Front: What is extension?

A

Back: The increase in length of a spring.

18
Q

Flashcard 18:
Front: What is a spring?

A

Back: A coiled length of certain types of metal.

19
Q

Flashcard 19:
Front: How can you find the extension of a spring?

A

Back: Extension = length of stretched spring with load - length of unstretched spring without load.

20
Q

Flashcard 20:
Front: How can you calculate weight when the mass is known?

A

Back: Weight = mass × gravitational acceleration (w = mg).

21
Q

Flashcard 21:
Front: What is the ‘limit of proportionality’ for an extension-load graph?

A

Back: A limit to how much you can load a steel spring without damaging it until at L. When a spring reaches this limit, it does not go back to its original shape when the load is taken off, and curving starts.

22
Q

Flashcard 22:
Front: What is the experimental procedure for proving Hooke’s Law?
Back:

A

Materials needed:
- Clamp
- Retort stand
- 20 g mass pieces
- Helical spring or rubber band
- Metre rule
- Pointer (piece of tape or wire to act as a pointer)

Methods/procedures:
- Set up apparatus as shown in the diagram
- Wrap a piece of wire or tape above the mass piece
- Note the value on the metre rule reached by a pointer
- Attach an additional mass piece and note a new reading on the metre rule
- Keep adding mass pieces until a total mass of 200 g has been added. Note the new reading on the metre rule each time
- The extension is equal to the difference in the metre rule readings.

23
Q

Flashcard 23:
Front: How do you calculate weight?

A

Back: ( w = mg )

24
Q

Flashcard 24:
Front: What is the conclusion from the Hooke’s Law experiment?

A

Back: Your graph should look like an Extension-Load graph, a graph of force against extension.

25
Q

Flashcard 1:
Front: What is the apparatus/materials setup to prove Hooke’s Law?

A

Back: Clamp, retort stand, 20 g mass pieces, helical spring or rubber band, metre rule, pointer (piece of tape or wire to act as a pointer).

26
Q

Flashcard 2:
Front: How do you record results in an extension-load experiment?

A

Back:
Example table:
- Mass added to the hanger (g)
- Weight added to the hanger (N)
- Ruler reading (cm)
- Extension (cm)
- 0 | 0.00 | 21.3 | 0.0
- 200 | 0.20 | 21.8 | 0.5
- 400 | 0.40 | 22.3 | 1.0

27
Q

Flashcard 4:
Front: State Hooke’s law and its formula.

A

Back:
- The restoring force of a spring is directly proportional to its small displacement.
- ( F = kx )
- F = force applied (N)
- k = spring constant (N/m)
- x = extension of the spring (m) (convert cm or mm to m before calculating)

28
Q

Flashcard 5:
Front: Describe the relationship between force, mass, and acceleration.

A

Back:
- Relationship between force and acceleration: The greater the force, the greater the acceleration OR force is directly proportional to acceleration.
- Relationship between mass and acceleration: The greater the mass, the smaller the acceleration OR mass is inversely proportional to acceleration.

29
Q

Flashcard 6:
Front: What is Newton’s second law of motion and its formula?

A

Back:
- Newton’s second law states: Acceleration produced by a resultant force is directly proportional to the force and inversely proportional to the mass of the object.
- ( F = m \times a )
- F = force (N)
- m = mass (kg)
- a = acceleration (m/s²)

30
Q

Flashcard 7:
Front: Define momentum and its formula.

A

Back:
- Momentum is the product of mass and velocity of an object.
- ( p = m \times v )
- p = momentum (kg.m/s)
- m = mass (kg)
- v = velocity (m/s)

31
Q

Flashcard 8:
Front: What is change in momentum or impulse?

A

Back:
- Change in momentum or impulse is the force causing the change in velocity and the time for which the force is applied.
- ( \Delta p = m \times (v - u) )
- ( \Delta p = mv - mu )
- ( \Delta p = m(v - u) )
- m = mass (kg)
- v = final velocity (m/s)
- u = initial velocity (m/s)

32
Q

Flashcard 9:
Front: Define the principle of conservation of momentum.

A

Back:
- When two or more objects interact (collide), their total momentum remains constant, provided that no external resultant force is acting on them.

33
Q

Flashcard 10:
Front: What are the characteristics of an elastic collision?

A

Back:
- Collision in which total kinetic energy of the objects (system) after collision is equal to their total kinetic energy before the collision.
- Internal kinetic energy is conserved and objects do not stick together but bounce off from each other.

34
Q

Flashcard 11:
Front: What are the characteristics of an inelastic collision?

A

Back:
- Collision in which most of the kinetic energy of the objects (system) is converted into other forms of energy, like sound, heat, etc.
- Internal kinetic energy is not conserved and objects stick together.
- Conservation of momentum applies that the momentum of the smaller object cancels out part or a small amount of the greater object’s momentum.
- Because they stick together, two objects have a combined mass equal to the sum of their masses, but with a velocity much smaller than either of the objects in impact.

35
Q

Flashcard 12:
Front: What is the formula for calculating collision in an inelastic collision?

A

Back:
- ( m_A \times u_A + m_B \times u_B )
- ( m_A ) = mass of car A
- ( u_A ) = initial velocity of car A
- ( m_B ) = mass of car B
- ( u_B ) = initial velocity of car B

Physics 😔✨💫 (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions