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Science Forces > Forces > Flashcards

Forces Flashcards

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1
Q

What is a push caused by an engine called?

A

Thrust.

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2
Q

What is a force?

A

A force is a push, pull or twist.

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3
Q

What does a Newton Metre measure?

A

Mass.

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4
Q

When forces of an object are balanced what will happen?

A

The object will either remain stationary or will move at a constant speed.

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5
Q

When the forces of an object are unbalanced what will happen?

A

The object will speed up or slow down.

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6
Q

What does 100g of mass weigh in Newtons?

A

1 Newton.

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7
Q

What is Up-thrust?

A

The force pushing upwards on an object in a liquid.

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8
Q

What is Air resistance and drag?

A

A force acting against any object that is moving through the earths atmosphere.

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9
Q

What is friction?

A

The force between two surfaces sliding over one another, that causes them to heat up and wear.

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10
Q

How do you find out weight?

A

Mass times gravity.

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11
Q

How do you find out mass?

A

Weight divided by gravity.

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12
Q

How do you find gravity?

A

Weight divided by mass.

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13
Q

How do you find speed?

A

Distance divided by time.

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14
Q

How do you find time?

A

Distance divided by speed.

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15
Q

How do you find distance?

A

Speed times time.

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16
Q

What is special about objects that can float in water?

A

Their Newton weight is zero in water.

17
Q

How do you find density?

A

Mass divided by volume

18
Q

How do you calculate the extension of a spring?

A

New length- original length

19
Q

What should you not use while explaining a experiment?

A

Fair test or equal test.

20
Q

When is friction helpful?

A

When stopping a car.

21
Q

When is friction unhelpful?

A

When you get rope or carpet burn.

22
Q

What is the Earths gravity?

A

10.

23
Q

What does mass measure?

A

The amount of matter in an object.

24
Q

What is push and pull?

A

The force exerted away or towards another object.

25
Q

What is lift?

A

A force pushing upwards on an object flying in the air.

26
Q

How much does 200g weigh in Newtons?

A

2 Newtons.

27
Q

If a car is travelling at a constant speed its forces are.

A

Balanced.

28
Q

What is mass measured in.

A

Kilograms.

29
Q

How can you find mass (give two ways)?

A

Weight divided by gravity or a mass pan balance.

30
Q

How can you reduce friction?

A

By making a slippy surface.

31
Q

What is meant by speed?

A

The rate of which an object covers a distance.

Science Forces (1 decks)

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