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Year 10 Science > Motions and Forces > Flashcards

Motions and Forces Flashcards

1
Q

Collect and record data by recording the data in a suitable table

A
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2
Q

Plot suitable distance-time graphs from data, where

A
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3
Q

Convert one unit of measurement into another unit of measurement

A

10 newtons = 1kg

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4
Q

Calculate speed from raw data

A

Divide the total distance travelled by the total time taken.
(speed = distance ÷ time)

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5
Q

Calculate speed from a distance-time graph

A

By calculating the slope (gradient) of the line by determining the rise ÷ run.

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6
Q

Draw a distance-time graph from raw data

A
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7
Q

Describe what graph slope means in terms of speed in a graph

A

o A horizontal line represents a stationary object
o A positive or negative slope represents an object moving away from
or towards the starting point
o A changing slope represents changing speed (an acceleration)
o The value of the slope is equal to the speed of the object

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8
Q

What does the slope of a speed-time graph represent

A

The slope of a speed-time graph represents its acceleration.

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9
Q

Use ticker timers to measure speed and describe it

A

and I know that the separation of the
dots increase when speed increases

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10
Q

Analyse a ticker tape to calculate acceleration by:

A
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11
Q

Recognise that there are different types of forces

A

Contact forces:
- Machines
- Muscles
- Friction
- Wind/Waves
- Supporting structures

Non - Contact forces:
- Gravity
- Magnetic
- Electrostatic
- Nuclear

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12
Q

Recognise Newton’s Third Law of Motion

A

Forces have an equal or opposite force.

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13
Q

Recognise the apparatus needed to measure force

A

Newtonmeter is the device used for measuring force acting on an object.

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14
Q

Recognise the difference between mass and weight

A

Mass: a measure of the amount of substance in an object. It is measured in kgs and mass never changes.

Weight: The pull of gravity on an object. Usually measured in newtons, and can vary from place to place.

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15
Q

Recognise Newton’s First Law of Motion

A

A stationary object remains stationary, and an object in motion stays in motion at constant speed and in a straight line unless acted on by an unbalanced force.

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16
Q

Recognise the link between force, mass and acceleration

A

F = ma (a = f/m), or net force is equal to mass times acceleration

17
Q

Recognise Newton’s Second Law of Motion

A

F = ma, or net force is equal to mass times acceleration

18
Q

Recognise de-acceleration

A

is the slowing down of an object and the force
acting on the object is acting in the opposite direction to its motion

19
Q

Understand what “energy” means in science

A

The ability to do work.

20
Q

Recognise The Law of Conservation of Energy

A

Energy cannot be created or destroyed only transformed (Joules).

21
Q

What is energy change

A

Any energy change in an object is associated with work

22
Q

What is work

A

Work is the amount of energy transferred when an object
is moved.

23
Q

What happens if an object moves when a force is applied

A

If an object moves when a force is applied, the energy change or work done is equal to the applied force multiplied by the
distance moved

24
Q

What is power

A

Power is the rate at which work is done.
Power = work done/time

25
Q

What is power in terms of energy change and time

A

Power is the ratio of energy change and the time taken for the energy change.
Power = energy change ÷ time taken

26
Q

What is power measured in

A

Watts

27
Q

How do you measure your power output

A
28
Q

What is a force

A

A movement, push pull twist that is applied to an object. Measured in newtons (N).

29
Q

What is it called when an object moves through a fluid and air

A

Drag

30
Q

Explain balanced and unbalanced forces

A

balanced : equal and opposite forces acting on an object causing the object to be stationary or in constant motion.

unbalanced : non equal and/or non opposite forces acting on an object causing the object to be pulled or pushed in a certain direction

31
Q

What is net force

A

The sum of all the forces acting on an object. No net force means the forces cancel out (balanced).

32
Q

What is force pairs

A

Forces occur in matched pairs. e.g Support and weight force
and Push and friction force

33
Q

State where each force is on an object

A

Support force is going up while weight force is going down. Push force goes toward wherever the object is being pushed while friction goes the opposite way.
- Note: that the bigger force will be drawn with a bigger arrow.

34
Q

Describe acceleration and its formulae.

A

Rate at which velocity changes with time, in terms of both speed and direction. - a = Δv/Δt. Measured in m/s^2.

35
Q

What is velocity

A

A speed with direction.

36
Q

What is the force of gravity

A

10m/s/s (metres per second per second).

Year 10 Science (7 decks)

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