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GCSE OCR Physics > P4 - Explaining Motion > Flashcards

P4 - Explaining Motion Flashcards

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1
Q

What are the units for speed?

A

m/s.

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2
Q

What are the units for distance travelled?

A

m.

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3
Q

What are the units for time taken?

A

s.

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4
Q

What is the speed of an object at a particular point in time called?

A

The instantaneous speed.

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5
Q

What are the units for acceleration?

A

m/s2.

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6
Q

What are the units for change in speed?

A

m/s.

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7
Q

What are the units for Time taken?

A

s.

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8
Q

What are the properties of forces in an interaction pair?

A
  • They are equal in size.
  • They are opposite in direction and act on different objects.
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9
Q

What do we call it when an object is resting on a surface?

A

Reaction of the surface.

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10
Q

Note to remember when drawing force arrows.

A

Arrows are always drawn with the tail end touching the object, even if the force is pushing the object.

So if o was a person it would be o <—[]

NOT o—>[]

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11
Q

What are the units for Momentum?

A

kg m/s.

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12
Q

What are the units for Mass?

A

kg.

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13
Q

What are the units for Velocity?

A

m/s.

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14
Q

What are the units for Resultant Force?

A

N.

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15
Q

What are the units for Time the force acts for?

A

s.

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16
Q

What are the units for Kinetic energy?

A

J.

17
Q

What is the force called that causes an object to move?

A

The driving force.

18
Q

What is the force called that restricts an object from moving?

A

The counter force.

19
Q

At what point would a skydiver stop accelerating and travel at a constant speed?

A

When air resistance and gravity become equal and opposite.

20
Q

What are the units for Work done by a force?

A

J.

21
Q

What are the units for Force?

A

N.

22
Q

What are the units for Distance moved in the direction of the force?

A

m.

23
Q

What are the units for Change in GPE?

A

J.

24
Q

What are the units for Weight?

A

N.

25
Q

What are the units for Vertical height difference?

A

m.

GCSE OCR Physics (8 decks)

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