P2 : Forces and Their Effects - Flash Cards [H]

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The gradient on Distance-Time graphs equals?
Speed.
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A flat line on Distance-Time graphs means what?
The object is at a stationary position.
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A straight line going uphill or downhill on Distance-Time graphs means what?
The object is travelling at a steady speed.
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The steeper the line on Distance-Time graphs means what?
The object is going faster.
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Downhill sections on Distance-Time graphs means what?
The object is going back to it's starting point.
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Curves on Distance-Time graphs means what?
The object is either accelerating or de-accelerating.
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The gradient on Velocity-Time graphs equals what?
Acceleration.
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Flat sections on Velocity-Time graphs mean what?
The object is at a steady speed.
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The steeper the graph on Velocity-Time graphs mean what?
The object's acceleration or de-acceleration is greater.
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Uphill sections on Velocity-Time graphs mean what?
Acceleration.
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Downhill sections on Velocity-Time graphs mean what?
De-acceleration.
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The area under any section on Velocity-Time graphs mean what?
The distance travelled by the object - in that time interval.
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A curve on Velocity-Time graphs mean what?
The object is changing it's acceleration.
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Two important effects of gravity are?
1) Gives everything weight. 2) On Earth, it gives everything the acceleration of 10m/s², towards the ground.
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Define Mass:
Mass is the amount of 'stuff' in an object (This will be the same anywhere in the universe).
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Define Weight:
Weight is mass when pulled by a gravitational force.
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What are the units for WEIGHT and MASS?
Weight is in newtons (N) as it'x a force & Mass is measured in kilograms (Kg) as it isn't a force.
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What is the resultant force on a object when it is stationary?
Zero.
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There is no resultant force on a moving object. Describe the velocity:
The object is moving at a constant velocity.
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There is a non-zerp resultant force on a object. Describe the movement of the object:
The object is either accelerating or de-accelerating in the direction of the force.
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Describe the forces, when two objects interact:
The forces they exert on each other are equal and opposite.
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If an object has a force acting on it, what force will always make the object slow down and stop?
Friction.
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What are the names of the resistive forces?
Resistance or Drag (Air or Liquid).
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When speed increases, what happens to the drag?
It also increases.
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What is the relation between the following: Braking Distance, Stopping Distance and Thinking Distance.
Thinking distance plus Braking Distance equals Stopping Distance.
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What factors affect thinking distance?
Tiredness, Drugs, Alcohol, Careless Attitude and Distractions.
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What factors affect braking distance?
The quality of brakes, the quality of tyres and the surface which is being driven on: Obstacles (Leafs) and Weather Conditions.
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What happens when a force moves an object through a distance?
Energy is transferred and work is done.
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When the height of an object is increased, what happens to it's Gravitational Potential Energy?
It also increases.
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What is the energy of Movement?
Kinetic Energy.
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Work Done to an Elastic Object is Stored as what?
Elastic Potential Energy.
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The extension of an elastic object is directly proportional to what?
It is proportional to the load or force applied.
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Power is the rate of what?
Energy transferred or Work Done, in seconds.
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What is the measurement units for Power?
Watts (W)
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What designs are put in place to increase the safety in a car crash?
Crumple Zones, Side Impact Bars, Seat Belts and Air Bags.
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What are the units for Momentum?
Kg m/s
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Other cards in this set

Card 2

Front

A flat line on Distance-Time graphs means what?

Back

The object is at a stationary position.

Card 3

Front

A straight line going uphill or downhill on Distance-Time graphs means what?

Back

Preview of the front of card 3

Card 4

Front

The steeper the line on Distance-Time graphs means what?

Back

Preview of the front of card 4

Card 5

Front

Downhill sections on Distance-Time graphs means what?

Back

Preview of the front of card 5
View more cards

Comments

Miss KHP


Great for P2 AQA Additional Science.

If you need lots of quick questions on forces, then use these. You have the option of printing them out so you can add them to your own revision notes.

Enjoy your revision.

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