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Homework > Science revision for rocket science booklet > Flashcards

Science revision for rocket science booklet Flashcards

1
Q

Name the 8 forces

A

Gravity/weight
Friction
Air resistance
Thrust
Upthrust
Electrostatic
Magnetic
Tension

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2
Q

A man landing a backflip

A

Weight

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3
Q

Parachute slowing the persons decent

A

Air resistance

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4
Q

Man thrown up in his canoe from the rough torrent

A

Upthrust

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5
Q

Magnet pulling up scraps of metal

A

Magnetic

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6
Q

Balloon pulling up cat’s hairs

A

Electrostatic

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7
Q

Parachute catching air resistance making the wind surfer turn right

A

Tension

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8
Q

Space shuttle taking off vertically

A

Thrust

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9
Q

Man pulling a sledge on snow

A

Friction

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10
Q

What is the resultant force?
A car with 10N going right and 20N going right?

A

30N to the right

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11
Q

What is the resultant force?
A car with 20N left and 40N right?

A

20N to the right

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12
Q

What is the resultant force?
A car with 25N left and 25N right?

A

0N, it will not move in any direction

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13
Q

What is the resultant force?
A car with 20N left and 50N right?
Will the car speed up or slow down?

A

30N to the right and the car will speed up

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14
Q

What is the resultant force?
A rocket with 20N upwards and 50N downwards?
Will the rocket speed up or slow down?

A

30N downwards and the rocket will slow down

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15
Q

What is the resultant force?
A helicopter with 700N upwards and 700N downwards?
Will the helicopter speed up or slow down?

A

0N, the helicopter will not move in any direction

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16
Q

What is the resultant force?
A Zorb ball with 20N to the left and 25N to the left?
If the Zorb baller was running from left to right what will happen when these forces are applied?

A

45N to the left and the Zorb baller will move left since there is a stronger force than going right

17
Q

What is the resultant force?
A rugby player gets tackled. He has 40N to the left and 25N to the left. But he has 85N to the right.
What direction will the rugby player travel?

A

20N to the right

18
Q

There is a tug of war between three women and two men.
All the women have a force of 50N each whilst the Men have 75N each.
What is the resultant force?
What direction will the rope travel?

A

0N, the rope won’t travel in any direction.

19
Q

Air resistance
What are the three things that affect air resistance?

A

Size of object
Shape of object
Size of object

20
Q

How do you measure speed?

A

Average speed=Distance divided by time

21
Q

How do you measure mass?

A

Weight=Mass times gravity
Weight=Mass times 9.81

Homework (16 decks)

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